diff --git a/components/tcp_transport/transport_ws.c b/components/tcp_transport/transport_ws.c
index 351ef6d8..86b34689 100644
--- a/components/tcp_transport/transport_ws.c
+++ b/components/tcp_transport/transport_ws.c
@@ -1,3 +1,5 @@
+#include "sdkconfig.h"
+
 #ifdef CONFIG_SSL_USING_MBEDTLS
 #include <stdlib.h>
 #include <string.h>