diff --git a/types/meteor/check.d.ts b/types/meteor/check.d.ts
index 9695f13b5d..57482cd3f5 100644
--- a/types/meteor/check.d.ts
+++ b/types/meteor/check.d.ts
@@ -7,6 +7,8 @@ declare module Match {
     var undefined: any;
     var Object: any;
 
+    function Maybe(pattern: any): boolean;
+
     function Optional(pattern: any): boolean;
 
     function ObjectIncluding(dico: any): boolean;
@@ -29,6 +31,8 @@ declare module "meteor/check" {
         var undefined: any;
         var Object: any;
 
+        function Maybe(pattern: any): boolean;
+
         function Optional(pattern: any): boolean;
 
         function ObjectIncluding(dico: any): boolean;