diff --git a/l10n/cy_GB.js b/l10n/cy_GB.js
index 45d2c7b..16eab91 100644
--- a/l10n/cy_GB.js
+++ b/l10n/cy_GB.js
@@ -2,6 +2,7 @@ OC.L10N.register(
     "ocsms",
     {
     "Cancel" : "Diddymu",
+    "Confirm" : "Cadarnhau",
     "Settings" : "Gosodiadau",
     "Disable" : "Analluogi"
 },
diff --git a/l10n/cy_GB.json b/l10n/cy_GB.json
index d35186d..b296c5d 100644
--- a/l10n/cy_GB.json
+++ b/l10n/cy_GB.json
@@ -1,5 +1,6 @@
 { "translations": {
     "Cancel" : "Diddymu",
+    "Confirm" : "Cadarnhau",
     "Settings" : "Gosodiadau",
     "Disable" : "Analluogi"
 },"pluralForm" :"nplurals=4; plural=(n==1) ? 0 : (n==2) ? 1 : (n != 8 && n != 11) ? 2 : 3;"