diff --git a/mkfile b/mkfile
index b53a631..9ca2d81 100644
--- a/mkfile
+++ b/mkfile
@@ -1,16 +1,19 @@
 `{ test -e config.mk || cp config.def.mk config.mk }
 
+configmk = `{pwd}/config.mk
+mkbuild = `{pwd}/mkbuild
+
 TARG = stage0
 
 all: $TARG
 
 &:
 	cd ports/stage0
-	mk
+	env -i PATH="$PATH" configmk="$configmk" mkbuild="$mkbuild" mk
 
 clean:
 	cd ports
-	mk clean
+	mk configmk="$configmk" mkbuild="$mkbuild" clean
 
 submodule:
 	git submodule init