diff --git a/src/backend/utils/mb/Unicode/Makefile b/src/backend/utils/mb/Unicode/Makefile
index 9e75ea3f0e..40065c3fbb 100644
--- a/src/backend/utils/mb/Unicode/Makefile
+++ b/src/backend/utils/mb/Unicode/Makefile
@@ -69,7 +69,7 @@ WINTEXTS = CP866.TXT CP874.TXT CP936.TXT CP949.TXT \
 	CP1256.TXT CP1257.TXT CP1258.TXT
 
 GENERICTEXTS = $(ISO8859TEXTS) $(WINTEXTS) \
-	KOI8-R.TXT JOHAB.TXT
+	KOI8-R.TXT KOI8-U.TXT JOHAB.TXT
 
 all: $(MAPS)