diff --git a/Makefile b/Makefile
index c519a5e..0659f3c 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ NAME := aoc
 FMT := c
 
 CC := cc
-CC_OPTIONS := -g -Wall -Wextra
+CC_OPTIONS := -g -Wall -Wextra -Werror
 DBG := gdb
 
 SRCD := src