diff --git a/src/server/scripts/Northrend/IcecrownCitadel/boss_lady_deathwhisper.cpp b/src/server/scripts/Northrend/IcecrownCitadel/boss_lady_deathwhisper.cpp
index 85126b35cd..7b8981eeb3 100644
--- a/src/server/scripts/Northrend/IcecrownCitadel/boss_lady_deathwhisper.cpp
+++ b/src/server/scripts/Northrend/IcecrownCitadel/boss_lady_deathwhisper.cpp
@@ -396,7 +396,7 @@ class boss_lady_deathwhisper : public CreatureScript
             void DamageTaken(Unit* /*damageDealer*/, uint32& damage) override
             {
                 // phase transition
-                if (_phase == PHASE_ONE && damage > me->GetPower(POWER_MANA))
+                if (_phase == PHASE_ONE && damage > uint32(me->GetPower(POWER_MANA)))
                 {
                     _phase = PHASE_TWO;
                     Talk(SAY_PHASE_2);