diff --git a/src/mod_zone_difficulty_scripts.cpp b/src/mod_zone_difficulty_scripts.cpp
index 8654c905..86184d2e 100644
--- a/src/mod_zone_difficulty_scripts.cpp
+++ b/src/mod_zone_difficulty_scripts.cpp
@@ -1084,7 +1084,7 @@ class mod_zone_difficulty_allcreaturescript : public AllCreatureScript
 
         CreatureBaseStats const* origCreatureStats = sObjectMgr->GetCreatureBaseStats(creature->GetLevel(), creatureTemplate->unit_class);
         uint32 baseHealth = origCreatureStats->GenerateHealth(creatureTemplate);
-        uint32 newHp = baseHealth;
+        uint32 scaledHealth = baseHealth;
         uint32 entry = creature->GetEntry();
 
         uint32 phaseMask = creature->GetPhaseMask();
@@ -1095,7 +1095,7 @@ class mod_zone_difficulty_allcreaturescript : public AllCreatureScript
         {
             // Trash mobs. Apply generic tuning.
             if (!creature->IsDungeonBoss() && isMythic)
-                newHp = round(baseHealth * sZoneDifficulty->MythicmodeHpModifier);
+                scaledHealth = round(baseHealth * sZoneDifficulty->MythicmodeHpModifier);
         }
         else
         {
@@ -1105,24 +1105,24 @@ class mod_zone_difficulty_allcreaturescript : public AllCreatureScript
             if (!multiplier)
                 multiplier = 1.0f; // never 0
 
-            newHp = round(baseHealth * multiplier);
+            scaledHealth = round(baseHealth * multiplier);
         }
 
         if (matchingPhase != -1)
         {
-            if (creature->GetMaxHealth() == newHp)
+            if (creature->GetMaxHealth() == scaledHealth)
                 return;
 
-            bool hpIsFull = false;
+            uint32 prevMaxHealth = creature->GetMaxHealth();
+            uint32 prevHealth = creature->GetHealth();
 
-            if (creature->GetHealthPct() >= 100)
-                hpIsFull = true;
+            creature->SetMaxHealth(scaledHealth);
+            creature->SetCreateHealth(scaledHealth);
+            creature->SetModifierValue(UNIT_MOD_HEALTH, BASE_VALUE, (float)scaledHealth);
+
+            uint32 scaledCurHealth = prevHealth && prevMaxHealth ? float(scaledHealth)/float(prevMaxHealth)*float(prevHealth) : 0;
+            creature->SetHealth(scaledCurHealth);
 
-            creature->SetMaxHealth(newHp);
-            creature->SetCreateHealth(newHp);
-            creature->SetModifierValue(UNIT_MOD_HEALTH, BASE_VALUE, (float)newHp);
-            if (hpIsFull)
-                creature->SetHealth(newHp);
             creature->UpdateAllStats();
             creature->ResetPlayerDamageReq();
         }