diff --git a/example/Makefile b/example/Makefile
index 575e0fa..bd48842 100644
--- a/example/Makefile
+++ b/example/Makefile
@@ -1,6 +1,6 @@
 
 CC = clang++
-CFLAGS = -std=c++14 -I..
+CFLAGS = -std=c++14 -I.. -Wall -Wextra
 #OPENSSL_SUPPORT = -DCPPHTTPLIB_OPENSSL_SUPPORT -I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib -lssl -lcrypto
 
 all: server client hello simplesvr benchmark