diff --git a/Makefile b/Makefile
index c6123e0..c3c7e84 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CC=`which gcc`
 CPPFLAGS=-DYA_DEBUG
-CFLAGS=--std=c11 -ggdb
+CFLAGS=--std=c11 -ggdb -Werror
 
 all: yatest