diff --git a/src/server/scripts/Outland/Auchindoun/ManaTombs/instance_mana_tombs.cpp b/src/server/scripts/Outland/Auchindoun/ManaTombs/instance_mana_tombs.cpp
index 144aea10889..8eb8b4fd751 100644
--- a/src/server/scripts/Outland/Auchindoun/ManaTombs/instance_mana_tombs.cpp
+++ b/src/server/scripts/Outland/Auchindoun/ManaTombs/instance_mana_tombs.cpp
@@ -17,6 +17,7 @@
 
 #include "ScriptMgr.h"
 #include "InstanceScript.h"
+#include "Unit.h"
 #include "mana_tombs.h"
 
 class instance_mana_tombs : public InstanceMapScript