diff --git a/l10n/cy_GB.js b/l10n/cy_GB.js
index 0c73c5a..9622355 100644
--- a/l10n/cy_GB.js
+++ b/l10n/cy_GB.js
@@ -4,6 +4,7 @@ OC.L10N.register(
     "Save" : "Cadw",
     "Display name" : "Enw Dangos",
     "Password" : "Cyfrinair",
+    "Hello %s" : "Helo %s",
     "Group" : "Grŵp",
     "Name" : "Enw",
     "Edit" : "Golygu",
diff --git a/l10n/cy_GB.json b/l10n/cy_GB.json
index 838a4eb..6de47ec 100644
--- a/l10n/cy_GB.json
+++ b/l10n/cy_GB.json
@@ -2,6 +2,7 @@
     "Save" : "Cadw",
     "Display name" : "Enw Dangos",
     "Password" : "Cyfrinair",
+    "Hello %s" : "Helo %s",
     "Group" : "Grŵp",
     "Name" : "Enw",
     "Edit" : "Golygu",