diff --git a/src/Microsoft.AspNet.Mvc.Core/Filters/ExceptionFilterAttribute.cs b/src/Microsoft.AspNet.Mvc.Core/Filters/ExceptionFilterAttribute.cs
index a5c0a59819..26985f2b01 100644
--- a/src/Microsoft.AspNet.Mvc.Core/Filters/ExceptionFilterAttribute.cs
+++ b/src/Microsoft.AspNet.Mvc.Core/Filters/ExceptionFilterAttribute.cs
@@ -12,13 +12,13 @@ namespace Microsoft.AspNet.Mvc
         public int Order { get; set; }
 
         #pragma warning disable 1998
-        public async Task OnExceptionAsync([NotNull] ExceptionContext context)
+        public virtual async Task OnExceptionAsync([NotNull] ExceptionContext context)
         {
             OnException(context);
         }
         #pragma warning restore 1998
 
-        public void OnException([NotNull] ExceptionContext context)
+        public virtual void OnException([NotNull] ExceptionContext context)
         {
         }
     }