diff --git a/lib/libc/quad/Makefile.inc b/lib/libc/quad/Makefile.inc
index 281eb7ed73c..14a5b1f50d1 100644
--- a/lib/libc/quad/Makefile.inc
+++ b/lib/libc/quad/Makefile.inc
@@ -18,4 +18,4 @@ SRCS+=	adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c fixdfdi.c \
 
 .endif
 
-SYM_MAP+=${.CURDIR}/quad/Symbol.map
+SYM_MAPS+=${.CURDIR}/quad/Symbol.map