diff --git a/moment.d.ts b/moment.d.ts
index b093aa311c..3256e2b853 100644
--- a/moment.d.ts
+++ b/moment.d.ts
@@ -716,6 +716,19 @@ declare namespace moment {
 
   export var defaultFormat: string;
   export var defaultFormatUtc: string;
+  
+  export var HTML5_FMT: { 
+    DATETIME_LOCAL: string,
+    DATETIME_LOCAL_SECONDS: string,
+    DATETIME_LOCAL_MS: string,
+    DATE: string,                           
+    TIME: string,                                 
+    TIME_SECONDS: string,                      
+    TIME_MS: string,                        
+    WEEK: string,                           
+    MONTH: string
+  };
+
 }
 
 export = moment;