diff --git a/test/Microsoft.AspNetCore.Mvc.Test/JsonPatchExtensionsTest.cs b/test/Microsoft.AspNetCore.Mvc.Test/JsonPatchExtensionsTest.cs
index b19ca4149e..5823345a4c 100644
--- a/test/Microsoft.AspNetCore.Mvc.Test/JsonPatchExtensionsTest.cs
+++ b/test/Microsoft.AspNetCore.Mvc.Test/JsonPatchExtensionsTest.cs
@@ -65,7 +65,7 @@ namespace Microsoft.AspNetCore.Mvc
         }
 
         [Theory]
-        [InlineData("test", "/CustomerName", null, "James", "The test operation is not supported.")]
+        [InlineData("test", "/CustomerName", null, "James", "The current value '' at path 'CustomerName' is not equal to the test value 'James'.")]
         [InlineData("invalid", "/CustomerName", null, "James", "Invalid JsonPatch operation 'invalid'.")]
         [InlineData("", "/CustomerName", null, "James", "Invalid JsonPatch operation ''.")]
         public void ApplyTo_InvalidPatchOperations_AddsModelStateError(