diff --git a/launcher/ui/themes/CatPack.h b/launcher/ui/themes/CatPack.h
index d9010b8ea..9f288d3dd 100644
--- a/launcher/ui/themes/CatPack.h
+++ b/launcher/ui/themes/CatPack.h
@@ -79,7 +79,7 @@ class JsonCatPack : public BasicCatPack {
             auto sp = d.split("-");
             day = sp[0].toInt();
             if (sp.length() >= 2)
-                mounth = sp[1].length();
+                mounth = sp[1].toInt();
         }
         int mounth;
         int day;