diff --git a/src/js/controllers/walletDetails.js b/src/js/controllers/walletDetails.js
index fa6ea0d47..afa0e3223 100644
--- a/src/js/controllers/walletDetails.js
+++ b/src/js/controllers/walletDetails.js
@@ -144,7 +144,7 @@ angular.module('copayApp.controllers').controller('walletDetailsController', fun
   };
 
   $scope.updateTxHistory = function(cb) {
-
+    if (!cb) cb = function() {};
     if ($scope.updatingTxHistory) return;
 
     $scope.updatingTxHistory = true;