diff --git a/CommandDistributor.cpp b/CommandDistributor.cpp
index d2cf3f9..be23577 100644
--- a/CommandDistributor.cpp
+++ b/CommandDistributor.cpp
@@ -37,7 +37,7 @@ int16_t lastclocktime;
 int8_t lastclockrate;
 
 
-#if WIFI_ON || ETHERNET_ON || defined(SERIAL1_COMMANDS) || defined(SERIAL2_COMMANDS) || defined(SERIAL3_COMMANDS)
+#if WIFI_ON || ETHERNET_ON || defined(SERIAL1_COMMANDS) || defined(SERIAL2_COMMANDS) || defined(SERIAL3_COMMANDS) || defined(SERIAL4_COMMANDS) || defined(SERIAL5_COMMANDS) || defined(SERIAL6_COMMANDS)
 // use a buffer to allow broadcast
 StringBuffer * CommandDistributor::broadcastBufferWriter=new StringBuffer();
 template<typename... Targs> void CommandDistributor::broadcastReply(clientType type, Targs... msg){