diff --git a/src/Tizen.NUI/src/public/Accessibility/Accessibility.cs b/src/Tizen.NUI/src/public/Accessibility/Accessibility.cs
index 425c3bc59dd..a8ef2c92127 100755
--- a/src/Tizen.NUI/src/public/Accessibility/Accessibility.cs
+++ b/src/Tizen.NUI/src/public/Accessibility/Accessibility.cs
@@ -332,7 +332,11 @@ public enum SayFinishedState
 
         private static void SayFinishedEventCallback(string status)
         {
-            var result = sayFinishedStateDictionary.GetValueOrDefault(status, SayFinishedState.Invalid);
+            SayFinishedState result;
+            if (!sayFinishedStateDictionary.TryGetValue(status, out result))
+            {
+                result = SayFinishedState.Invalid;
+            }
             NUILog.Debug($"sayFinishedEventCallback(res={result}) called!");
 
             SayFinished?.Invoke(typeof(Accessibility), new SayFinishedEventArgs(result));