diff --git a/src/game/Unit.cpp b/src/game/Unit.cpp
index ee849a9f1..59c431657 100644
--- a/src/game/Unit.cpp
+++ b/src/game/Unit.cpp
@@ -9107,8 +9107,8 @@ uint32 Unit::SpellDamageBonusDone(Unit *pVictim, SpellEntry const *spellProto, u
         }
         case SPELLFAMILY_DEATHKNIGHT:
         {
-            // Icy Touch, Howling Blast and Frost Strike
-            if (spellProto->SpellFamilyFlags & UI64LIT(0x0000000600000002))
+            // Icy Touch and Howling Blast
+            if (spellProto->SpellFamilyFlags & UI64LIT(0x0000000200000002))
             {
                 // search disease
                 bool found = false;
@@ -10179,6 +10179,36 @@ uint32 Unit::MeleeDamageBonusDone(Unit *pVictim, uint32 pdamage,WeaponAttackType
         }
     }
 
+    // Frost Strike
+    if (spellProto && spellProto->SpellFamilyName == SPELLFAMILY_DEATHKNIGHT && spellProto->SpellFamilyFlags & UI64LIT(0x0000000400000000))
+    {       
+        // search disease
+        bool found = false;
+        Unit::AuraMap const& auras = pVictim->GetAuras();
+        for(Unit::AuraMap::const_iterator itr = auras.begin(); itr!=auras.end(); ++itr)
+        {
+            if(itr->second->GetSpellProto()->Dispel == DISPEL_DISEASE)
+            {
+                found = true;
+                break;
+            }
+        }
+
+        if(found)
+        {
+            // search for Glacier Rot dummy aura
+            Unit::AuraList const& dummyAuras = GetAurasByType(SPELL_AURA_DUMMY);
+            for(Unit::AuraList::const_iterator i = dummyAuras.begin(); i != dummyAuras.end(); ++i)
+            {
+                if ((*i)->GetSpellProto()->EffectMiscValue[(*i)->GetEffIndex()] == 7244)
+                {
+                    DonePercent *= ((*i)->GetModifier()->m_amount+100.0f) / 100.0f;
+                    break;
+                }
+            }
+        }
+     }
+
 
     // final calculation
     // =================
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 0e084b71a..8461a411f 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "9833"
+ #define REVISION_NR "9834"
 #endif // __REVISION_NR_H__