diff --git a/data/interfaces/default/mobile_devices_table.html b/data/interfaces/default/mobile_devices_table.html
index 0f6770a9..c3a16c8c 100644
--- a/data/interfaces/default/mobile_devices_table.html
+++ b/data/interfaces/default/mobile_devices_table.html
@@ -121,6 +121,7 @@ DOCUMENTATION :: END
     });
 
     $('#api_qr_address').change(function () {
+        this.value = $.trim(this.value);
         var url = $(this).val();
         checkQRAddress(url);