--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,9 @@
-CFLAGS = -O $(SYSFLAGS)
-
 bsd:	
 	@echo 'Options are "make bsd" and "make SysV" - the default is "bsd".'
 	@echo 'If you get messages about missing functions, try "make SysV."'
-	make Bonnie 
+	$(MAKE) Bonnie 
 
 SysV:	
-	make Bonnie 'SYSFLAGS=-DSysV'
+	$(MAKE) Bonnie 'SYSFLAGS=-DSysV'
 
 Bonnie: