diff --git a/lib/libc_r/locale/Makefile.inc b/lib/libc_r/locale/Makefile.inc
index eae25a06683b..e6be02824c5b 100644
--- a/lib/libc_r/locale/Makefile.inc
+++ b/lib/libc_r/locale/Makefile.inc
@@ -5,4 +5,5 @@
 
 SRCS+=	ansi.c ctype.c euc.c frune.c isctype.c lconv.c localeconv.c \
 	mbrune.c none.c rune.c setlocale.c table.c utf2.c setrunelocale.c \
-	runetype.c tolower.c toupper.c nomacros.c collate.c setinvalidrune.c
+	runetype.c tolower.c toupper.c nomacros.c collate.c setinvalidrune.c \
+	collcmp.c