diff --git a/QuickFIXn/MessageCracker.cs b/QuickFIXn/MessageCracker.cs
index 989a969ae..98126dc22 100644
--- a/QuickFIXn/MessageCracker.cs
+++ b/QuickFIXn/MessageCracker.cs
@@ -53,12 +53,13 @@ private void TryBuildCallCache(MethodInfo m)
 
         public static bool IsHandlerMethod(MethodInfo m)
         {
+            ParameterInfo[] parameters;
             return m.IsPublic
+                   && m.ReturnType == typeof(void)
                    && m.Name.Equals("OnMessage")
-                   && m.GetParameters().Length == 2
-                   && m.GetParameters()[0].ParameterType.IsSubclassOf(typeof(Message))
-                   && typeof(SessionID).IsAssignableFrom(m.GetParameters()[1].ParameterType)
-                   && m.ReturnType == typeof(void);
+                   && (parameters = m.GetParameters()).Length == 2
+                   && parameters[0].ParameterType.IsSubclassOf(typeof(Message))
+                   && typeof(SessionID).IsAssignableFrom(parameters[1].ParameterType);
         }
 
 
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 7a188562c..364322262 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -49,6 +49,7 @@ What's New
 * #910 - faster Message.GetMsgType that doesn't use Regex (jkulubya)
 * #516 - remove ability to toggle Session-enable via HttpServer because it never really worked (gbirchmeier)
 * #913/#741 - new FieldMap.ReadGroups for iterating on groups (NoviProg/gbirchmeier)
+* #914 - Optimize MessageCracker.IsHandlerMethod (vasily-balansea)
 
 ### v1.12.0