diff --git a/lib/devices/ios/ios.js b/lib/devices/ios/ios.js
index ab1fdf3a9e1..8f063ae1b98 100644
--- a/lib/devices/ios/ios.js
+++ b/lib/devices/ios/ios.js
@@ -931,7 +931,7 @@ IOS.prototype.cleanupAppState = function (cb) {
             rimraf.sync(keychain);
             logger.info("Deleted " + keychain);
           }
-        });
+        }.bind(this));
       } else {
         logger.info("No folders found to remove");
         if (this.realDevice && this.bundleId) {