diff --git a/Makefile b/Makefile
index 8370baf..2de32c1 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ CC=cc
 G=
 O=-O2
 CFLAGS=-std=c99 -Werror -D_XOPEN_SOURCE=700 -D_GNU_SOURCE -D_POSIX_C_SOURCE=200809L
-CWARN=-Wall -Wpedantic -Wextra -Wsign-conversion -Wtype-limits -Wunused-result
+CWARN=-Wall -Wpedantic -Wextra -Wsign-conversion -Wtype-limits -Wunused-result -Wnull-dereference
 #CFLAGS += -fsanitize=address -fno-omit-frame-pointer
 CFLAGS += '-DBB_NAME="$(NAME)"'