diff --git a/pjsip-apps/src/samples/httpdemo.c b/pjsip-apps/src/samples/httpdemo.c
index def97d2..739dc07 100644
--- a/pjsip-apps/src/samples/httpdemo.c
+++ b/pjsip-apps/src/samples/httpdemo.c
@@ -45,6 +45,7 @@
 
 static void on_response(pj_http_req *http_req, const pj_http_resp *resp)
 {
+	PJ_UNUSED_ARG(http_req);
     PJ_LOG(3,(THIS_FILE, "%.*s %d %.*s", (int)resp->version.slen, resp->version.ptr,
 				           resp->status_code,
 				           (int)resp->reason.slen, resp->reason.ptr));
@@ -52,7 +53,9 @@
 
 static void on_send_data(pj_http_req *http_req, void **data, pj_size_t *size)
 {
-
+	PJ_UNUSED_ARG(http_req);
+	PJ_UNUSED_ARG(size);
+	PJ_UNUSED_ARG(data);
 }
 
 static void on_data_read(pj_http_req *hreq, void *data, pj_size_t size)