diff --git a/src/views/backups.html b/src/views/backups.html
index 8abc9c53f..556715f78 100644
--- a/src/views/backups.html
+++ b/src/views/backups.html
@@ -162,7 +162,7 @@
           </div>
 
            <!-- EXT4 -->
-          <div class="form-group" ng-class="{ 'has-error': configureBackup.error.diskPath || !configureBackup.diskPath }" ng-show="configureBackup.provider === 'ext4'">
+          <div class="form-group" ng-class="{ 'has-error': configureBackup.error.diskPath || !configureBackup.mountOptions.diskPath }" ng-show="configureBackup.provider === 'ext4'">
             <label class="control-label" for="inputConfigureDiskPath">{{ 'backups.configureBackupStorage.diskPath' | tr }}</label>
             <input type="text" class="form-control" ng-model="configureBackup.mountOptions.diskPath" id="inputConfigureDiskPath" name="diskPath" ng-disabled="configureBackup.busy" placeholder="/dev/disk/by-uuid/uuid" ng-required="configureBackup.provider === 'ext4'">
           </div>