diff --git a/po/ar.po b/po/ar.po
index fa546a38e7..b8827e7904 100644
--- a/po/ar.po
+++ b/po/ar.po
@@ -9790,7 +9790,7 @@ msgstr "ملحق \\Alph{appendix}:"
 
 #: lib/layouts/copernicus.layout:262
 msgid "\\Alph{appendix}\\arabic{subappendix}"
-msgstr "\\Alph{appendix}\arabic{subappendix}"
+msgstr "\\Alph{appendix}\\arabic{subappendix}"
 
 #: lib/layouts/copernicus.layout:273
 msgid "\\Alph{appendix}\\arabic{subappendix}.\\arabic{subsubappendix}"