diff --git a/Makefile b/Makefile
index 2a3804b..5abcd6e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CFLAGS ?= -g -O2 -Wall -Wextra -D_FORTIFY_SOURCE=2 -fstack-protector --param ssp-buffer-size=4
+override CFLAGS := -g -O2 -Wall -Wextra -D_FORTIFY_SOURCE=2 -fstack-protector --param ssp-buffer-size=4 $(CFLAGS)
 BINDIR ?= $(HOME)
 
 %: %.c