diff --git a/program/js/app.js b/program/js/app.js
index fe40a8b89..6b4be6c76 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -3368,7 +3368,11 @@ function rcube_webmail()
 
         return rcube_event.cancel(e);
 
-      case 13:  // enter
+      case 9:  // tab
+        if (mod == SHIFT_KEY)
+          break;
+
+     case 13:  // enter
         if (this.ksearch_selected===null || !this.ksearch_input || !this.ksearch_value)
           break;