diff --git a/rosapps/packmgr/gui/cz.rc b/rosapps/packmgr/gui/cz.rc
index 3483eb17e19..086d12021be 100644
--- a/rosapps/packmgr/gui/cz.rc
+++ b/rosapps/packmgr/gui/cz.rc
@@ -1,5 +1,5 @@
 
-LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
+LANGUAGE LANG_CZECH, SUBLANG_DEFAULT
 
 /* Dialogs */
 IDD_OPTIONS DIALOG DISCARDABLE  0, 0, 180, 200