diff --git a/sql/updates/world/custom/custom_2019_07_28_00_world.sql b/sql/updates/world/custom/custom_2019_07_28_00_world.sql
new file mode 100644
index 0000000000..0c7ad7e7a0
--- /dev/null
+++ b/sql/updates/world/custom/custom_2019_07_28_00_world.sql
@@ -0,0 +1,2 @@
+UPDATE `spell_bonus_data` SET `ap_bonus`= 0 WHERE `entry` IN (47632, 47633);
+UPDATE `spell_bonus_data` SET `comments`= 'Death Knight - Death Coil (Damage)' WHERE `entry`= 47632;
diff --git a/src/server/game/Spells/SpellMgr.cpp b/src/server/game/Spells/SpellMgr.cpp
index 3f51e83437..0709badfd2 100644
--- a/src/server/game/Spells/SpellMgr.cpp
+++ b/src/server/game/Spells/SpellMgr.cpp
@@ -5436,6 +5436,12 @@ void SpellMgr::LoadSpellInfoCorrections()
         spellInfo->AttributesEx3 |= SPELL_ATTR3_NO_DONE_BONUS;
     });
 
+    // Death Coil
+    ApplySpellFix({ 47541 }, [](SpellInfo* spellInfo)
+    {
+        spellInfo->AttributesEx3 |= SPELL_ATTR3_NO_DONE_BONUS;
+    });
+
     for (uint32 i = 0; i < GetSpellInfoStoreSize(); ++i)
     {
         SpellInfo* spellInfo = mSpellInfoMap[i];
diff --git a/src/server/scripts/Spells/spell_dk.cpp b/src/server/scripts/Spells/spell_dk.cpp
index bf97e7acbe..e6e2f7c6c1 100644
--- a/src/server/scripts/Spells/spell_dk.cpp
+++ b/src/server/scripts/Spells/spell_dk.cpp
@@ -293,39 +293,24 @@ class spell_dk_death_and_decay : public AuraScript
     }
 };
 
+// 47541 - Death Coil
 class spell_dk_death_coil : public SpellScript
 {
     PrepareSpellScript(spell_dk_death_coil);
 
     bool Validate(SpellInfo const* /*spell*/) override
     {
-        return ValidateSpellInfo({ SPELL_DK_DEATH_COIL_DAMAGE, SPELL_DK_DEATH_COIL_HEAL });
-    }
-
-    void HandleDummy(SpellEffIndex /*effIndex*/)
-    {
-        int32 damage = GetEffectValue();
-        Unit* caster = GetCaster();
-        if (Unit* target = GetHitUnit())
-        {
-            if (caster->IsFriendlyTo(target))
+        return ValidateSpellInfo(
             {
-                int32 bp = int32(damage * 1.5f);
-                caster->CastCustomSpell(target, SPELL_DK_DEATH_COIL_HEAL, &bp, nullptr, nullptr, true);
-            }
-            else
-            {
-                if (AuraEffect const* auraEffect = caster->GetAuraEffect(SPELL_DK_ITEM_SIGIL_VENGEFUL_HEART, EFFECT_1))
-                    damage += auraEffect->GetBaseAmount();
-                caster->CastCustomSpell(target, SPELL_DK_DEATH_COIL_DAMAGE, &damage, nullptr, nullptr, true);
-            }
-        }
+                SPELL_DK_DEATH_COIL_DAMAGE,
+                SPELL_DK_DEATH_COIL_HEAL
+            });
     }
 
     SpellCastResult CheckCast()
     {
         Unit* caster = GetCaster();
-        if (Unit* target = GetExplTargetUnit())
+        if (Unit * target = GetExplTargetUnit())
         {
             if (!caster->IsFriendlyTo(target) && !caster->isInFront(target))
                 return SPELL_FAILED_UNIT_NOT_INFRONT;
@@ -339,6 +324,30 @@ class spell_dk_death_coil : public SpellScript
         return SPELL_CAST_OK;
     }
 
+    void HandleDummy(SpellEffIndex /*effIndex*/)
+    {
+        Unit* caster = GetCaster();
+        if (!caster)
+            return;
+
+        Unit* target = GetHitUnit();
+        int32 bp = GetEffectValue();
+        bp += CalculatePct(caster->GetTotalAttackPowerValue(BASE_ATTACK), 23);
+
+        if (caster->IsFriendlyTo(target))
+        {
+            bp *= 3.5f;
+            caster->CastCustomSpell(SPELL_DK_DEATH_COIL_HEAL, SPELLVALUE_BASE_POINT0, bp, target, true);
+        }
+        else
+        {
+            if (AuraEffect const* auraEffect = caster->GetAuraEffect(SPELL_DK_ITEM_SIGIL_VENGEFUL_HEART, EFFECT_1))
+                bp += auraEffect->GetBaseAmount();
+
+            caster->CastCustomSpell(SPELL_DK_DEATH_COIL_DAMAGE, SPELLVALUE_BASE_POINT0, bp, target, true);
+        }
+    }
+
     void Register() override
     {
         OnCheckCast += SpellCheckCastFn(spell_dk_death_coil::CheckCast);