diff --git a/src/HotChocolate/Core/src/Types.Mutations/Extensions/ObjectFieldDefinitionExtensions.cs b/src/HotChocolate/Core/src/Types.Mutations/Extensions/ObjectFieldDefinitionExtensions.cs
index ff553c4cb44..b4882d2c29f 100644
--- a/src/HotChocolate/Core/src/Types.Mutations/Extensions/ObjectFieldDefinitionExtensions.cs
+++ b/src/HotChocolate/Core/src/Types.Mutations/Extensions/ObjectFieldDefinitionExtensions.cs
@@ -40,7 +40,7 @@ public static void AddErrorType(
             throw new ArgumentNullException(nameof(errorType));
         }
 
-        if (descriptorContext.ContextData[MutationContextDataKeys.Options] == null)
+        if (descriptorContext.ContextData.ContainsKey(MutationContextDataKeys.Options))
         {
             var richMessage = string.Format(
                 MutationConvention_ShouldBeEnabled_WhenAddingErrorType,