diff --git a/sys/conf/Makefile.arm b/sys/conf/Makefile.arm
index af6ce713663..5195191e015 100644
--- a/sys/conf/Makefile.arm
+++ b/sys/conf/Makefile.arm
@@ -29,7 +29,7 @@ S=	../../..
 .endif
 .include "$S/conf/kern.pre.mk"
 
-INCLUDES+= -I$S/contrib/libfdt -I$S/contrib/device-tree/include -I$$/dts/include
+INCLUDES+= -I$S/contrib/libfdt -I$S/contrib/device-tree/include -I$S/dts/include
 
 LINUX_DTS_VERSION!=	awk '/freebsd,dts-version/ { sub(/;$$/,"", $$NF); print $$NF }' $S/dts/freebsd-compatible.dts
 CFLAGS += -DLINUX_DTS_VERSION=\"${LINUX_DTS_VERSION}\"