diff --git a/src/server/game/Spells/Auras/SpellAuraEffects.h b/src/server/game/Spells/Auras/SpellAuraEffects.h
index 6f0c05a27..7fdf0df91 100644
--- a/src/server/game/Spells/Auras/SpellAuraEffects.h
+++ b/src/server/game/Spells/Auras/SpellAuraEffects.h
@@ -110,6 +110,7 @@ public:
     uint8 GetCasterLevel() const { return m_casterLevel; }
     bool CanApplyResilience() const { return m_applyResilience; }
     float GetPctMods() const { return m_pctMods; }
+    void SetPctMods(float pctMods) { m_pctMods = pctMods; }
 
     // xinef: stacking
     uint32 GetAuraGroup() const { return m_auraGroup; }
diff --git a/src/server/scripts/Spells/spell_dk.cpp b/src/server/scripts/Spells/spell_dk.cpp
index cd47823c1..8e27678c0 100644
--- a/src/server/scripts/Spells/spell_dk.cpp
+++ b/src/server/scripts/Spells/spell_dk.cpp
@@ -1727,6 +1727,16 @@ class spell_dk_pestilence : public SpellScript
 {
     PrepareSpellScript(spell_dk_pestilence);
 
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo(
+        {
+            SPELL_DK_GLYPH_OF_DISEASE,
+            SPELL_DK_BLOOD_PLAGUE,
+            SPELL_DK_FROST_FEVER
+        });
+    }
+
     void HandleScriptEffect(SpellEffIndex /*effIndex*/)
     {
         Unit* caster = GetCaster();
@@ -1743,11 +1753,38 @@ class spell_dk_pestilence : public SpellScript
 
             // And spread them on target
             // Blood Plague
-            if (target->GetAura(SPELL_DK_BLOOD_PLAGUE, caster->GetGUID()))
-                caster->CastSpell(hitUnit, SPELL_DK_BLOOD_PLAGUE, true);
+            if (Aura* disOld = target->GetAura(SPELL_DK_BLOOD_PLAGUE, caster->GetGUID()))
+                if (AuraEffect* effOld = disOld->GetEffect(EFFECT_0))
+                {
+                    float pctMods = effOld->GetPctMods();
+                    float crit = effOld->GetCritChance();
+                    caster->CastSpell(hitUnit, SPELL_DK_BLOOD_PLAGUE, true);
+
+                    if (Aura* disNew = hitUnit->GetAura(SPELL_DK_BLOOD_PLAGUE, caster->GetGUID()))
+                        if (AuraEffect* effNew = disNew->GetEffect(EFFECT_0))
+                        {
+                            effNew->SetPctMods(pctMods);
+                            effNew->SetCritChance(crit);
+                            effNew->SetAmount(effNew->CalculateAmount(effNew->GetCaster()));
+                        }
+                }
+
             // Frost Fever
-            if (target->GetAura(SPELL_DK_FROST_FEVER, caster->GetGUID()))
-                caster->CastSpell(hitUnit, SPELL_DK_FROST_FEVER, true);
+            if (Aura* disOld = target->GetAura(SPELL_DK_FROST_FEVER, caster->GetGUID()))
+                if (AuraEffect* effOld = disOld->GetEffect(EFFECT_0))
+                {
+                    float pctMods = effOld->GetPctMods();
+                    float crit = effOld->GetCritChance();
+                    caster->CastSpell(hitUnit, SPELL_DK_FROST_FEVER, true);
+
+                    if (Aura* disNew = hitUnit->GetAura(SPELL_DK_FROST_FEVER, caster->GetGUID()))
+                        if (AuraEffect* effNew = disNew->GetEffect(EFFECT_0))
+                        {
+                            effNew->SetPctMods(pctMods);
+                            effNew->SetCritChance(crit);
+                            effNew->SetAmount(effNew->CalculateAmount(effNew->GetCaster()));
+                        }
+                }
         }
     }