diff --git a/src/WebSockets.h b/src/WebSockets.h
index 60c13d9..3ee3f3a 100644
--- a/src/WebSockets.h
+++ b/src/WebSockets.h
@@ -94,7 +94,9 @@
 #define WEBSOCKETS_YIELD_MORE()
 #endif
 
+#ifndef WEBSOCKETS_TCP_TIMEOUT
 #define WEBSOCKETS_TCP_TIMEOUT (5000)
+#endif
 
 #define NETWORK_ESP8266_ASYNC (0)
 #define NETWORK_ESP8266 (1)