diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/boss_kazrogal.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/boss_kazrogal.cpp
index f349345b5..ab34d8e50 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/boss_kazrogal.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/boss_kazrogal.cpp
@@ -161,7 +161,7 @@ public:
         {
             Unit* target = GetTarget();
 
-            if (target->GetPower(POWER_MANA) < aurEff->GetBaseAmount())
+            if ((int32)target->GetPower(POWER_MANA) < aurEff->GetBaseAmount())
             {
                 target->CastSpell(target, SPELL_MARK_DAMAGE, true, nullptr, aurEff);
                 // Remove aura