fix undefine style

1 files changed, 1 insertions, 1 deletions

diff --git a/src/directives.js b/src/directives.js
index a333c4c4..6b81d864 100644
--- a/src/directives.js
+++ b/src/directives.js
@@ -255,7 +255,7 @@ angularDirective("ng:hide", function(expression, element){
 angularDirective("ng:style", function(expression, element){
   return function(element){
     this.$onEval(function(){
-      element.css(this.$eval(expression));
+      element.css(this.$eval(expression) || {});
     }, element);
   };
 });