diff --git a/src/timepicker/timepicker.js b/src/timepicker/timepicker.js
index 8738224160..ee69d3f86c 100644
--- a/src/timepicker/timepicker.js
+++ b/src/timepicker/timepicker.js
@@ -103,7 +103,7 @@ angular.module('ui.bootstrap.timepicker', [])
   }
 
   function pad( value ) {
-    return ( angular.isDefined(value) && value.toString().length < 2 ) ? '0' + value : value;
+    return ( angular.isDefined(value) && value.toString().length < 2 ) ? '0' + value : value.toString();
   }
 
   // Respond on mousewheel spin