diff --git a/angular-material/angular-material.d.ts b/angular-material/angular-material.d.ts
index a263c951ff..3b9a896c90 100644
--- a/angular-material/angular-material.d.ts
+++ b/angular-material/angular-material.d.ts
@@ -223,7 +223,7 @@ declare module angular.material {
     }
     
     interface IDateLocaleProvider {
-        month: string[];
+        months: string[];
         shortMonths: string[];
         days: string[];
         shortDays: string[];