diff --git a/src/NJsonSchema.CodeGeneration.CSharp.Tests/GeneralGeneratorTests.cs b/src/NJsonSchema.CodeGeneration.CSharp.Tests/GeneralGeneratorTests.cs
index 306dd2ed5..388796f02 100644
--- a/src/NJsonSchema.CodeGeneration.CSharp.Tests/GeneralGeneratorTests.cs
+++ b/src/NJsonSchema.CodeGeneration.CSharp.Tests/GeneralGeneratorTests.cs
@@ -739,132 +739,6 @@ public async Task When_property_is_required_then_CSharp_code_is_correct()
             AssertCompile(code);
         }
         
-        [Fact]
-        public async Task When_using_SystemTextJson_JsonIgnoreAttributes_are_generated_based_on_optionality() {
-            //// Arrange
-            var schema = await JsonSchema.FromJsonAsync(@"{
-                ""type"": ""object"",
-                ""required"": [""requiredValue"",""requiredRef""],
-                ""properties"": {
-                    ""requiredValue"": { ""type"": ""integer"", ""format"": ""int32"" },
-                    ""requiredRef"": { ""type"": ""string"" },
-                    ""optionalValue"": { ""type"": ""integer"", ""format"": ""int32"" },
-                    ""optionalRef"": { ""type"": ""string"" }
-                }
-            }");
-            
-            var generator = new CSharpGenerator(schema, new CSharpGeneratorSettings {
-                JsonLibrary = CSharpJsonLibrary.SystemTextJson
-            });
-            
-            static string Normalized(string str) =>
-                Regex.Replace(str, @"\s+", " ");
-            
-            //// Act
-            var code = generator.GenerateFile("MyClass");
-            
-            /// Assert
-            Assert.Contains(
-                Normalized(@"public int OptionalValue {"),
-                Normalized(code)
-            );
-            
-            Assert.Contains(
-                Normalized(@"
-                    [System.Text.Json.Serialization.JsonPropertyName(""requiredValue"")]
-                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.Never)]
-                "),
-                Normalized(code)
-            );
-            
-            Assert.Contains(
-                Normalized(@"
-                    [System.Text.Json.Serialization.JsonPropertyName(""requiredRef"")]
-                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.Never)]
-                "),
-                Normalized(code)
-            );
-            
-            Assert.Contains(
-                Normalized(@"
-                    [System.Text.Json.Serialization.JsonPropertyName(""optionalValue"")]
-                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull)]
-                "),
-                Normalized(code)
-            );
-            
-            Assert.Contains(
-                Normalized(@"
-                    [System.Text.Json.Serialization.JsonPropertyName(""optionalRef"")]
-                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull)]
-                "),
-                Normalized(code)
-            );
-        }
-        
-        [Fact]
-        public async Task When_using_SystemTextJson_and_RequiredPropertiesMustBeDefined_is_false_JsonIgnoreAttributes_are_not_generated_for_required_properties() {
-            //// Arrange
-            var schema = await JsonSchema.FromJsonAsync(@"{
-                ""type"": ""object"",
-                ""required"": [""required""],
-                ""properties"": {
-                    ""required"": { ""type"": ""string"" }
-                }
-            }");
-            
-            var generator = new CSharpGenerator(schema, new CSharpGeneratorSettings {
-                JsonLibrary = CSharpJsonLibrary.SystemTextJson,
-                RequiredPropertiesMustBeDefined = false
-            });
-            
-            static string Normalized(string str) =>
-                Regex.Replace(str, @"\s+", " ");
-            
-            //// Act
-            var code = generator.GenerateFile("MyClass");
-            
-            /// Assert
-            Assert.DoesNotContain(
-                Normalized(@"
-                    [System.Text.Json.Serialization.JsonIgnore
-                "),
-                Normalized(code)
-            );
-        }
-        
-        [Fact]
-        public async Task When_using_SystemTextJson_and_RequiredPropertiesMustBeDefined_is_false_JsonIgnoreAttributes_are_still_generated_for_optional_properties() {
-            //// Arrange
-            var schema = await JsonSchema.FromJsonAsync(@"{
-                ""type"": ""object"",
-                ""required"": [],
-                ""properties"": {
-                    ""optional"": { ""type"": ""string"" }
-                }
-            }");
-            
-            var generator = new CSharpGenerator(schema, new CSharpGeneratorSettings {
-                JsonLibrary = CSharpJsonLibrary.SystemTextJson,
-                RequiredPropertiesMustBeDefined = false
-            });
-            
-            static string Normalized(string str) =>
-                Regex.Replace(str, @"\s+", " ");
-            
-            //// Act
-            var code = generator.GenerateFile("MyClass");
-            
-            /// Assert
-            Assert.Contains(
-                Normalized(@"
-                    [System.Text.Json.Serialization.JsonPropertyName(""optional"")]
-                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull)]
-                "),
-                Normalized(code)
-            );
-        }
-
         [Fact]
         public void When_array_property_is_required_or_not_then_the_code_has_correct_initializer()
         {
diff --git a/src/NJsonSchema.CodeGeneration.CSharp.Tests/JsonIgnoreAttributesTests.cs b/src/NJsonSchema.CodeGeneration.CSharp.Tests/JsonIgnoreAttributesTests.cs
new file mode 100644
index 000000000..f5125244e
--- /dev/null
+++ b/src/NJsonSchema.CodeGeneration.CSharp.Tests/JsonIgnoreAttributesTests.cs
@@ -0,0 +1,177 @@
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace NJsonSchema.CodeGeneration.CSharp.Tests
+{
+    public class JsonIgnoreAttributesTests
+    {
+        [Fact]
+        public async Task When_using_SystemTextJson_JsonIgnoreAttributes_are_generated_based_on_optionality()
+        {
+            //// Arrange
+            var schema = await JsonSchema.FromJsonAsync(@"{
+                ""type"": ""object"",
+                ""required"": [""requiredValue"",""requiredNullableValue"",""requiredRef""],
+                ""properties"": {
+                    ""requiredValue"": { ""type"": ""integer"", ""format"": ""int32"" },
+                    ""requiredNullableValue"": { ""type"": [""integer"", ""null""], ""format"": ""int32"" },
+                    ""requiredRef"": { ""type"": ""string"" },
+                    ""optionalValue"": { ""type"": ""integer"", ""format"": ""int32"" },
+                    ""optionalNullableValue"": { ""type"": [""integer"", ""null""], ""format"": ""int32"" },
+                    ""optionalRef"": { ""type"": ""string"" }
+                }
+            }");
+
+            var generator = new CSharpGenerator(schema, new CSharpGeneratorSettings
+            {
+                JsonLibrary = CSharpJsonLibrary.SystemTextJson,
+            });
+
+            static string Normalized(string str) =>
+                Regex.Replace(str, @"\s+", " ");
+
+            //// Act
+            var code = generator.GenerateFile("MyClass");
+
+            /// Assert
+            Assert.Contains(
+                Normalized(@"public int OptionalValue {"),
+                Normalized(code)
+            );
+
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""requiredValue"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.Never)]
+                "),
+                Normalized(code)
+            );
+
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""requiredNullableValue"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.Never)]
+                "),
+                Normalized(code)
+            );
+
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""requiredRef"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.Never)]
+                "),
+                Normalized(code)
+            );
+
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""optionalValue"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault)]
+                "),
+                Normalized(code)
+            );
+
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""optionalNullableValue"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault)]
+                "),
+                Normalized(code)
+            );
+
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""optionalRef"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault)]
+                "),
+                Normalized(code)
+            );
+        }
+
+        [Fact]
+        public async Task When_using_SystemTextJson_and_RequiredPropertiesMustBeDefined_is_false_JsonIgnoreAttributes_are_not_generated_for_required_properties()
+        {
+            //// Arrange
+            var schema = await JsonSchema.FromJsonAsync(@"{
+                ""type"": ""object"",
+                ""required"": [""required""],
+                ""properties"": {
+                    ""required"": { ""type"": ""string"" }
+                }
+            }");
+
+            var generator = new CSharpGenerator(schema, new CSharpGeneratorSettings
+            {
+                JsonLibrary = CSharpJsonLibrary.SystemTextJson,
+                RequiredPropertiesMustBeDefined = false
+            });
+
+            static string Normalized(string str) =>
+                Regex.Replace(str, @"\s+", " ");
+
+            //// Act
+            var code = generator.GenerateFile("MyClass");
+
+            /// Assert
+            Assert.DoesNotContain(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonIgnore
+                "),
+                Normalized(code)
+            );
+        }
+
+        [Fact]
+        public async Task When_using_SystemTextJson_and_RequiredPropertiesMustBeDefined_is_false_JsonIgnoreAttributes_are_still_generated_for_optional_properties()
+        {
+            //// Arrange
+            var schema = await JsonSchema.FromJsonAsync(@"{
+                ""type"": ""object"",
+                ""required"": [],
+                ""properties"": {
+                    ""optionalRef"": { ""type"": ""string"" },
+                    ""optionalValue"": { ""type"": ""integer"", ""format"": ""int32"" },
+                    ""optionalNullableValue"": { ""type"": [""integer"", ""null""], ""format"": ""int32"" }
+                }
+            }");
+
+            var generator = new CSharpGenerator(schema, new CSharpGeneratorSettings
+            {
+                JsonLibrary = CSharpJsonLibrary.SystemTextJson,
+                RequiredPropertiesMustBeDefined = false
+            });
+
+            static string Normalized(string str) =>
+                Regex.Replace(str, @"\s+", " ");
+
+            //// Act
+            var code = generator.GenerateFile("MyClass");
+
+            /// Assert
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""optionalRef"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault)]
+                "),
+                Normalized(code)
+            );
+
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""optionalValue"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault)]
+                "),
+                Normalized(code)
+            );
+
+            Assert.Contains(
+                Normalized(@"
+                    [System.Text.Json.Serialization.JsonPropertyName(""optionalNullableValue"")]
+                    [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault)]
+                "),
+                Normalized(code)
+            );
+        }
+    }
+}
diff --git a/src/NJsonSchema.CodeGeneration.CSharp/Models/PropertyModel.cs b/src/NJsonSchema.CodeGeneration.CSharp/Models/PropertyModel.cs
index 185392862..62b3d8f35 100644
--- a/src/NJsonSchema.CodeGeneration.CSharp/Models/PropertyModel.cs
+++ b/src/NJsonSchema.CodeGeneration.CSharp/Models/PropertyModel.cs
@@ -64,17 +64,18 @@ public PropertyModel(
                 (_property.ActualTypeSchema.IsArray && _settings.GenerateImmutableArrayProperties) ||
                 (_property.ActualTypeSchema.IsDictionary && _settings.GenerateImmutableDictionaryProperties)
             )) == false;
-            
+
         /// <summary>Indicates whether or not this property has a <see cref="JsonIgnoreCondition"/>.</summary>
         public bool HasJsonIgnoreCondition => JsonIgnoreCondition != null;
 
         /// <summary>Returns the System.Text.Json.Serialization.JsonIgnoreCondition value to be applied to the property.</summary>
-        public string JsonIgnoreCondition => _property switch {
-            { IsRequired: false } => "System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull",
+        public string JsonIgnoreCondition => _property switch
+        {
+            { IsRequired: false } => "System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault",
             { IsRequired: true } when _settings.RequiredPropertiesMustBeDefined => "System.Text.Json.Serialization.JsonIgnoreCondition.Never",
             _ => null
         };
-            
+
         /// <summary>Gets the json property required.</summary>
         public string JsonPropertyRequiredCode
         {