--- a/Makefile	1996-08-29 03:45:37.000000000 +0200
+++ b/Makefile	2011-08-25 16:07:10.757629898 +0200
@@ -1,11 +1,11 @@
-CFLAGS = -O $(SYSFLAGS)
+CFLAGS = $(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: