diff --git a/build/windows/installer/lang/iso_639_custom.xml b/build/windows/installer/lang/iso_639_custom.xml
index c9b57a3324..3edb4709b5 100644
--- a/build/windows/installer/lang/iso_639_custom.xml
+++ b/build/windows/installer/lang/iso_639_custom.xml
@@ -192,7 +192,7 @@ To fill data for a new entry:
 		name="Taqbaylit" />
 	<iso_639_entry
 		dl_code="kk"
-		inno_code=""
+		inno_code="Languages\\Unofficial\\Kazakh.islu"
 		name="Qazaq" />
 	<iso_639_entry
 		dl_code="km"