diff --git a/src/config/locales/sk-SK.json b/src/config/locales/sk-SK.json
index 6beb1d48b..f348be4f5 100644
--- a/src/config/locales/sk-SK.json
+++ b/src/config/locales/sk-SK.json
@@ -172,6 +172,7 @@
   },
   "alert": {
     "success": "Success!",
+    "successful": "Successful",
     "allRead": "Marked all notifications as read",
     "claim_reward_balance_ok": "Reward balance claimed",
     "fail": "Fail!",