diff --git a/commangular/commangular-mock.d.ts b/commangular/commangular-mock.d.ts
index 8f74b659fc..134e4d0d1e 100644
--- a/commangular/commangular-mock.d.ts
+++ b/commangular/commangular-mock.d.ts
@@ -14,7 +14,7 @@ declare module commangular {
 		/**
 		 * Mock dispatch function for testing commands.
 		 */
-		dispatch( ec: ICommandCall, callback: Function );
+		dispatch( ec: ICommandCall, callback: Function ): void;
 	}
 	
 	interface ICommandCall {
@@ -69,5 +69,5 @@ declare module commangular {
 * @param callback The function that will be called upon the completion of the command
 * 		function should expecte an ICommandInfo paramter.
 */
-declare function dispatch( ec: commangular.ICommandCall, callback: Function );	
+declare function dispatch( ec: commangular.ICommandCall, callback: Function ): void;	
 
diff --git a/commangular/commangular.d.ts b/commangular/commangular.d.ts
index bf3cbb5d94..b03a22574e 100644
--- a/commangular/commangular.d.ts
+++ b/commangular/commangular.d.ts
@@ -73,7 +73,7 @@ declare module commangular {
 		/**
 		 * TBD
 		 */
-		resolver( commandName: string, resolverFunction ) : void; 
+		resolver( commandName: string, resolverFunction : Function ) : void; 
 		
 		/**
 		 * Clears all commands and aspects registered with commangular.