diff --git a/src/lang/ts/mod.rs b/src/lang/ts/mod.rs
index 1d0c35d..3c2e039 100644
--- a/src/lang/ts/mod.rs
+++ b/src/lang/ts/mod.rs
@@ -656,4 +656,4 @@ const STRING: &str = "string";
 const BOOLEAN: &str = "boolean";
 const NULL: &str = "null";
 const NEVER: &str = "never";
-const BIGINT: &str = "BigInt";
+const BIGINT: &str = "bigint";
diff --git a/tests/bigints.rs b/tests/bigints.rs
index 23b41b5..16e86fc 100644
--- a/tests/bigints.rs
+++ b/tests/bigints.rs
@@ -69,7 +69,7 @@ fn test_bigint_types() {
 
     for_bigint_types!(T -> |name| assert_eq!(specta::ts::inline::<T>(&ExportConfig::new().bigint(BigIntExportBehavior::String)), Ok("string".into())));
     for_bigint_types!(T -> |name| assert_eq!(specta::ts::inline::<T>(&ExportConfig::new().bigint(BigIntExportBehavior::Number)), Ok("number".into())));
-    for_bigint_types!(T -> |name| assert_eq!(specta::ts::inline::<T>(&ExportConfig::new().bigint(BigIntExportBehavior::BigInt)), Ok("BigInt".into())));
+    for_bigint_types!(T -> |name| assert_eq!(specta::ts::inline::<T>(&ExportConfig::new().bigint(BigIntExportBehavior::BigInt)), Ok("bigint".into())));
 
     // Check error messages are working correctly -> These tests second for `ExportPath` which is why they are so comprehensive
     assert_eq!(