diff --git a/src/server/game/Handlers/DuelHandler.cpp b/src/server/game/Handlers/DuelHandler.cpp
index 5a993374562..eedfe578b4b 100644
--- a/src/server/game/Handlers/DuelHandler.cpp
+++ b/src/server/game/Handlers/DuelHandler.cpp
@@ -23,6 +23,7 @@
 #include "Opcodes.h"
 #include "UpdateData.h"
 #include "Player.h"
+#include "ObjectAccessor.h"
 
 #define SPELL_DUEL  7266
 #define SPELL_MOUNTED_DUEL  62875