diff --git a/lib/office/officeController.js b/lib/office/officeController.js
index 504a749..3c7d513 100644
--- a/lib/office/officeController.js
+++ b/lib/office/officeController.js
@@ -145,7 +145,11 @@ var officeController = function(neweventbus) {
 };
 
 officeController.prototype.saveData = function() {
-    jsonfile.writeFile(file, this.iosTokens);
+    jsonfile.writeFile(file, this.iosTokens, function(err, obj) {
+      if(err) {
+        logger.error(err);
+      }
+    });
 };