diff --git a/frappe/data/languages.txt b/frappe/data/languages.txt
index b9bd0d18b6..616c444e77 100644
--- a/frappe/data/languages.txt
+++ b/frappe/data/languages.txt
@@ -2,7 +2,7 @@ ar	العربية
 bg	bǎlgarski
 bs	bosanski
 ca	català
-cs	český
+cz	česky
 da	dansk
 de	deutsch
 el	ελληνικά