diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/hyjalAI.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/hyjalAI.cpp
index cdac1b1864..a407f86ba7 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/hyjalAI.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/hyjalAI.cpp
@@ -27,6 +27,7 @@ EndScriptData */
 #include "ScriptedCreature.h"
 #include "ScriptedEscortAI.h"
 #include "GridNotifiers.h"
+#include "GridNotifiersImpl.h"
 #include "Cell.h"
 #include "CellImpl.h"
 #include "hyjalAI.h"