diff --git a/Makefile b/Makefile
index 5bdc9b8..fe69450 100644
--- a/Makefile
+++ b/Makefile
@@ -122,7 +122,7 @@ CFLAGS_MYSQL += -DMX_MYSQL_FAIL_WAIT_DEFAULT=5
 
 CFLAGS += -g
 CFLAGS += -O3
-CFLAGS += -Wall -Wextra -Wno-override-init
+CFLAGS += -Wall -Wextra -Wno-override-init -Werror
 CFLAGS += -DMXQ_VERSION=\"${MXQ_VERSION}\"
 CFLAGS += -DMXQ_VERSIONFULL=\"${MXQ_VERSIONFULL}\"
 CFLAGS += -DMXQ_VERSIONDATE=\"${MXQ_VERSIONDATE}\"