diff --git a/src/game/Globals/UnitCondition.cpp b/src/game/Globals/UnitCondition.cpp
index 08688a5ddc..334e334f72 100644
--- a/src/game/Globals/UnitCondition.cpp
+++ b/src/game/Globals/UnitCondition.cpp
@@ -166,7 +166,7 @@ int32 UnitConditionMgr::getConditionValue(Unit const* source, Unit const* target
         case UnitCondition::HAS_HARMFUL_AURA_SCHOOL:
             return source->HasAuraHolder([value](SpellAuraHolder* holder)
             {
-                return !holder->IsPositive() && GetSpellSchoolMask(holder->GetSpellProto()) & (1 << value);
+                return !holder->IsPositive() && holder->GetSpellProto()->GetSchoolMask() & (1 << value);
             }) ? value : 0;
         case UnitCondition::DAMAGE_PHYSICAL: break;
         case UnitCondition::DAMAGE_HOLY: break;
diff --git a/src/game/Server/DBCStructure.h b/src/game/Server/DBCStructure.h
index 75630bc5e0..757bd49ca2 100644
--- a/src/game/Server/DBCStructure.h
+++ b/src/game/Server/DBCStructure.h
@@ -833,6 +833,11 @@ struct SpellEntry
             return mask;
         }
 
+        SpellSchoolMask GetSchoolMask() const
+        {
+            return SpellSchoolMask(1 << School);
+        }
+
     private:
         // prevent creating custom entries (copy data from original in fact)
         SpellEntry(SpellEntry const&);                      // DON'T must have implementation