diff --git a/lib/lib.Makefile b/lib/lib.Makefile
index 03535169c..b036f099e 100644
--- a/lib/lib.Makefile
+++ b/lib/lib.Makefile
@@ -47,8 +47,6 @@ endif
 
 ifeq ($(DBG),yes)
 CFLAGS+=	-D__DEBUG=1
-else
-CFLAGS+=	-O3
 endif