1 files changed, 2 insertions, 0 deletions
diff --git a/options.mk b/options.mk
index 34c6697..98919c8 100644
--- a/options.mk
+++ b/options.mk
@@ -7,6 +7,8 @@ PREFIX ?= /home/chess
 
 CC ?= cc
 CFLAGS = -O2 -Wall -g -pipe -std=c11 \
+	-Wformat-security \
+	-Wshadow \
 	-Wsign-compare \
 	-Wstrict-prototypes