diff --git a/frontend/src/uxbox/main/locales/en.cljs b/frontend/src/uxbox/main/locales/en.cljs
index 3095db29f..8aa9a3e7e 100644
--- a/frontend/src/uxbox/main/locales/en.cljs
+++ b/frontend/src/uxbox/main/locales/en.cljs
@@ -224,6 +224,7 @@
 
    "history.alert-message" "You are seeing version %s"
 
+   "errors.api.form.unexpected-error" "An unexpected error occurred."
    "errors.api.form.old-password-not-match" "Incorrect old password"
    "errors.api.form.registration-disabled" "The registration is currently disabled."
    "errors.api.form.email-already-exists" "The email is already in use by another user."
diff --git a/frontend/src/uxbox/main/locales/fr.cljs b/frontend/src/uxbox/main/locales/fr.cljs
index f8c37c20b..ac6c2a8dc 100644
--- a/frontend/src/uxbox/main/locales/fr.cljs
+++ b/frontend/src/uxbox/main/locales/fr.cljs
@@ -221,6 +221,7 @@
 
    "history.alert-message" "Vous voyez la version %s"
 
+   "errors.api.form.unexpected-error" "Une erreur inattendue c'est produite"
    "errors.api.form.old-password-not-match" "Ancien mot de passe incorrect"
    "errors.api.form.registration-disabled" "L'enregistrement est actuellement désactivé."
    "errors.api.form.email-already-exists" "L'email est déjà utilisé par un autre utilisateur."
diff --git a/frontend/src/uxbox/main/ui/auth/register.cljs b/frontend/src/uxbox/main/ui/auth/register.cljs
index db3f2d648..226ec6f39 100644
--- a/frontend/src/uxbox/main/ui/auth/register.cljs
+++ b/frontend/src/uxbox/main/ui/auth/register.cljs
@@ -46,7 +46,9 @@
     :uxbox.services.users/username-already-exists
     (swap! form assoc-in [:errors :username]
            {:type ::api
-            :message "errors.api.form.username-already-exists"})))
+            :message "errors.api.form.username-already-exists"})
+
+    (st/emit! (tr "errors.api.form.unexpected-error"))))
 
 (defn- on-submit
   [event form]