diff --git a/lib/utils/platform.js b/lib/utils/platform.js
index c0adaac..0f77f5c 100644
--- a/lib/utils/platform.js
+++ b/lib/utils/platform.js
@@ -68,6 +68,7 @@ utils.platform = (function () {
 
   platform.SpeechRecognition = platformName(['SpeechRecognition', 'webkitSpeechRecognition'])
   platform.SpeechGrammarList = platformName(['SpeechGrammarList', 'webkitSpeechGrammarList'])
+  platform.SpeechGrammar     = platformName(['SpeechGrammar'])
 
   /*
    function findWebGLContextName (candidates) {