diff --git a/markdown.js b/markdown.js
index 08f2248..6f50526 100644
--- a/markdown.js
+++ b/markdown.js
@@ -18,7 +18,8 @@ angular.module('btford.markdown', ['ngSanitize']).
       }
     };
   }).
-  directive('btfMarkdown', function ($sanitize, markdownConverter) {
+  directive('btfMarkdown', ['$sanitize', 'markdownConverter',
+    function ($sanitize, markdownConverter) {
     return {
       restrict: 'AE',
       link: function (scope, element, attrs) {
@@ -33,4 +34,4 @@ angular.module('btford.markdown', ['ngSanitize']).
         }
       }
     };
-  });
+  }]);