diff --git a/src/server/game/Server/Packets/PartyPackets.h b/src/server/game/Server/Packets/PartyPackets.h
index 70cc12ea518..089e34a48ff 100644
--- a/src/server/game/Server/Packets/PartyPackets.h
+++ b/src/server/game/Server/Packets/PartyPackets.h
@@ -20,6 +20,7 @@
 
 #include "Packet.h"
 #include "ObjectGuid.h"
+#include "OptionalFwd.h"
 
 class Player;