Index: buildsys.mk.in
==================================================================
--- buildsys.mk.in
+++ buildsys.mk.in
@@ -148,11 +148,12 @@
 		${DIR_LEAVE}; \
 	done
 
 depend: pre-depend
 	: >.deps
-	for i in ${DEPS}; do \
+	for i in "" ${DEPS}; do \
+		test x"$$i" = x"" && continue; \
 		echo "-include \$${.CURDIR}/$$i" >>.deps; \
 	done
 
 pre-depend: