diff --git a/src/ExpressiveAnnotations.MvcUnobtrusive.Tests/ValidatorsTest.cs b/src/ExpressiveAnnotations.MvcUnobtrusive.Tests/ValidatorsTest.cs
index bb150bd..84634cc 100644
--- a/src/ExpressiveAnnotations.MvcUnobtrusive.Tests/ValidatorsTest.cs
+++ b/src/ExpressiveAnnotations.MvcUnobtrusive.Tests/ValidatorsTest.cs
@@ -27,6 +27,8 @@ public void Setup()
                 new HttpRequest(string.Empty, "http://tempuri.org", string.Empty),
                 new HttpResponse(new StringWriter())
                 );
+
+            MapCache.Instance.Clear();
         }
 
         [TestMethod]
diff --git a/src/ExpressiveAnnotations.MvcUnobtrusive/ExpressiveAnnotations.MvcUnobtrusive.csproj b/src/ExpressiveAnnotations.MvcUnobtrusive/ExpressiveAnnotations.MvcUnobtrusive.csproj
index 0f9717b..62ab2a8 100644
--- a/src/ExpressiveAnnotations.MvcUnobtrusive/ExpressiveAnnotations.MvcUnobtrusive.csproj
+++ b/src/ExpressiveAnnotations.MvcUnobtrusive/ExpressiveAnnotations.MvcUnobtrusive.csproj
@@ -66,6 +66,7 @@
   <ItemGroup>
     <Compile Include="Providers\ExpressiveAnnotationsModelValidatorProvider.cs" />
     <Compile Include="RequestStorage.cs" />
+    <Compile Include="MapCache.cs" />
     <Compile Include="Validators\AssertThatValidator.cs" />
     <Compile Include="Helper.cs" />
     <Compile Include="Validators\ExpressiveValidator.cs" />
diff --git a/src/ExpressiveAnnotations.MvcUnobtrusive/MapCache.cs b/src/ExpressiveAnnotations.MvcUnobtrusive/MapCache.cs
new file mode 100644
index 0000000..b169bd8
--- /dev/null
+++ b/src/ExpressiveAnnotations.MvcUnobtrusive/MapCache.cs
@@ -0,0 +1,44 @@
+/* https://github.com/JaroslawWaliszko/ExpressiveAnnotations
+ * Copyright (c) 2014 Jaroslaw Waliszko
+ * Licensed MIT: http://opensource.org/licenses/MIT */
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+
+namespace ExpressiveAnnotations.MvcUnobtrusive
+{
+    internal class MapCache
+    {
+        private static readonly MapCache _instance = new MapCache();
+        private static readonly ConcurrentDictionary<string, CacheItem> _cache = new ConcurrentDictionary<string, CacheItem>();
+
+        private MapCache()
+        {
+        }
+
+        public static MapCache Instance
+        {
+            get { return _instance; }
+        }
+
+        public CacheItem GetOrAdd(string key, Func<string, CacheItem> func)
+        {
+            return _cache.GetOrAdd(key, func);
+        }
+
+        public void Clear()
+        {
+            _cache.Clear();
+        }
+    }
+
+    internal class CacheItem
+    {
+        public IDictionary<string, string> FieldsMap { get; set; }
+        public IDictionary<string, object> ConstsMap { get; set; }
+        public IDictionary<string, string> ParsersMap { get; set; }
+        public IDictionary<string, Guid> ErrFieldsMap { get; set; }
+        public string FormattedErrorMessage { get; set; }
+    }
+}
diff --git a/src/ExpressiveAnnotations.MvcUnobtrusive/Validators/ExpressiveValidator.cs b/src/ExpressiveAnnotations.MvcUnobtrusive/Validators/ExpressiveValidator.cs
index 51a6618..125d547 100644
--- a/src/ExpressiveAnnotations.MvcUnobtrusive/Validators/ExpressiveValidator.cs
+++ b/src/ExpressiveAnnotations.MvcUnobtrusive/Validators/ExpressiveValidator.cs
@@ -3,7 +3,6 @@
  * Licensed MIT: http://opensource.org/licenses/MIT */
 
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Diagnostics;
@@ -20,8 +19,6 @@ namespace ExpressiveAnnotations.MvcUnobtrusive.Validators
     /// <typeparam name="T">Any type derived from <see cref="ExpressiveAttribute" /> class.</typeparam>
     public abstract class ExpressiveValidator<T> : DataAnnotationsModelValidator<T> where T : ExpressiveAttribute
     {
-        private static readonly ConcurrentDictionary<string, CacheItem> _cache = new ConcurrentDictionary<string, CacheItem>();
-
         /// <summary>
         ///     Constructor for expressive model validator.
         /// </summary>
@@ -38,7 +35,7 @@ protected ExpressiveValidator(ModelMetadata metadata, ControllerContext context,
                 var attribId = string.Format("{0}.{1}", attribute.TypeId, annotatedField).ToLowerInvariant();
                 FieldAttributeType = string.Format("{0}.{1}", typeof(T).FullName, annotatedField).ToLowerInvariant();
 
-                var item = _cache.GetOrAdd(attribId, _ =>
+                var item = MapCache.Instance.GetOrAdd(attribId, _ =>
                 {
                     var parser = new Parser();
                     parser.RegisterMethods();
@@ -192,14 +189,5 @@ private void AssertAttribsQuantityAllowed(int count)
                 throw new InvalidOperationException(
                     string.Format("No more than {0} unique attributes of the same type can be applied for a single field or property.", max));
         }
-
-        private class CacheItem
-        {
-            public IDictionary<string, string> FieldsMap { get; set; }
-            public IDictionary<string, object> ConstsMap { get; set; }
-            public IDictionary<string, string> ParsersMap { get; set; }
-            public IDictionary<string, Guid> ErrFieldsMap { get; set; }
-            public string FormattedErrorMessage { get; set; }
-        }
     }
 }