--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ BINDIR= $(HOME)/bin
 VERSION=1.95
 
 CC = gcc
-CFLAGS= -O3 -Wall -Winline -pedantic
+CFLAGS+= -O3 -Wall -Winline -pedantic
 CFLAGS+= -g
 
 # The "-DLinuxTCP" controls which TCP options are in use