diff --git a/Makefile b/Makefile
index 12edf93..9f5418f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 include config.mk
 
-CFLAGS	=-Wall -Werror
+CFLAGS	+=-Wall -Werror
 LIBS	= $(MORELIBS) -lm
 LIBS 	+= -lcurl -lconfig