diff --git a/Src/Newtonsoft.Json/Serialization/JsonArrayContract.cs b/Src/Newtonsoft.Json/Serialization/JsonArrayContract.cs
index 2a1fd262..23db0c8f 100644
--- a/Src/Newtonsoft.Json/Serialization/JsonArrayContract.cs
+++ b/Src/Newtonsoft.Json/Serialization/JsonArrayContract.cs
@@ -107,7 +107,7 @@ namespace Newtonsoft.Json.Serialization
 
     private void EnsureGenericWrapperCreator()
     {
-      if (_genericWrapperType == null)
+      if (_genericWrapperCreator == null)
       {
         _genericWrapperType = ReflectionUtils.MakeGenericType(typeof (CollectionWrapper<>), CollectionItemType);
 
diff --git a/Src/Newtonsoft.Json/Serialization/JsonDictionaryContract.cs b/Src/Newtonsoft.Json/Serialization/JsonDictionaryContract.cs
index 3ad7a2f9..45a83b3f 100644
--- a/Src/Newtonsoft.Json/Serialization/JsonDictionaryContract.cs
+++ b/Src/Newtonsoft.Json/Serialization/JsonDictionaryContract.cs
@@ -92,7 +92,7 @@ namespace Newtonsoft.Json.Serialization
       if (dictionary is IDictionary && (DictionaryValueType == null || !_isDictionaryValueTypeNullableType))
         return new DictionaryWrapper<object, object>((IDictionary)dictionary);
 
-      if (_genericWrapperType == null)
+      if (_genericWrapperCreator == null)
       {
         _genericWrapperType = ReflectionUtils.MakeGenericType(typeof(DictionaryWrapper<,>), DictionaryKeyType, DictionaryValueType);