diff --git a/mkfile b/mkfile
index c9d666f..f06f380 100644
--- a/mkfile
+++ b/mkfile
@@ -1,5 +1,6 @@
-hammurabi: hammurabi.8
-    8l -ohammurabi hammurabi.8
+< /$objtype/mkfile
 
-hammurabi.8: hammurabi.c
-    8c hammurabi.c
+TARG=hammurabi
+OFILES=hammurabi.$O
+BIN=/$objtype/bin
+</sys/src/cmd/mkone