diff --git a/build.tools/makefile.mk b/build.tools/makefile.mk
index 6c96987..67de25f 100644
--- a/build.tools/makefile.mk
+++ b/build.tools/makefile.mk
@@ -1,15 +1,21 @@
 #
-# $Id: makefile.mk,v 1.1 1997/01/21 15:34:02 gdr Exp $
+# $Id: makefile.mk,v 1.2 1997/09/21 22:52:13 gdr Exp $
 #
 
 TARGETS	= mkso
 OBJS	= mkso.o mkso.root
 CFLAGS	+=
 
-default: mkso
+default: build
+
+build: mkso
 
 mkso: mkso.o
 	$(CC) -o $@ $(LDFLAGS) $< $(LDLIBS)
 
 clean clobber:
-	$(RM) -f $(TARGETS) $(OBJS)
+	$(RM) -f $(TARGETS) $(OBJS) mkso.root
+
+release: installbin mkso
+	$(INSTALL) -d $(DISK1)
+	$(INSTALL) installbin mkso $(DISK1)