diff --git a/apps/openmw/mwmechanics/actors.cpp b/apps/openmw/mwmechanics/actors.cpp
index ce3297d61..23f2978e6 100644
--- a/apps/openmw/mwmechanics/actors.cpp
+++ b/apps/openmw/mwmechanics/actors.cpp
@@ -688,7 +688,9 @@ namespace MWMechanics
         creatureStats.getActiveSpells().visitEffectSources(updateSummonedCreatures);
         if (ptr.getClass().hasInventoryStore(ptr))
             ptr.getClass().getInventoryStore(ptr).visitEffectSources(updateSummonedCreatures);
-        updateSummonedCreatures.finish();
+        std::set<int> deleted = updateSummonedCreatures.process();
+        for (std::set<int>::const_iterator it = deleted.begin(); it != deleted.end(); ++it)
+            purgeSpellEffects(*it);
     }
 
     void Actors::calculateNpcStatModifiers (const MWWorld::Ptr& ptr, float duration)
@@ -1242,11 +1244,7 @@ namespace MWMechanics
                 ++mDeathCount[Misc::StringUtils::lowerCase(iter->first.getCellRef().getRefId())];
 
                 // Make sure spell effects are removed
-                for (PtrActorMap::iterator iter2(mActors.begin());iter2 != mActors.end();++iter2)
-                {
-                    MWMechanics::ActiveSpells& spells = iter2->first.getClass().getCreatureStats(iter2->first).getActiveSpells();
-                    spells.purge(stats.getActorId());
-                }
+                purgeSpellEffects(stats.getActorId());
 
                 if( iter->first == getPlayer())
                 {
@@ -1261,6 +1259,15 @@ namespace MWMechanics
         }
     }
 
+    void Actors::purgeSpellEffects(int casterActorId)
+    {
+        for (PtrActorMap::iterator iter(mActors.begin());iter != mActors.end();++iter)
+        {
+            MWMechanics::ActiveSpells& spells = iter->first.getClass().getCreatureStats(iter->first).getActiveSpells();
+            spells.purge(casterActorId);
+        }
+    }
+
     void Actors::restoreDynamicStats(bool sleep)
     {
         for(PtrActorMap::iterator iter(mActors.begin());iter != mActors.end();++iter)
diff --git a/apps/openmw/mwmechanics/actors.hpp b/apps/openmw/mwmechanics/actors.hpp
index 6eb062ca2..2dae6b1fb 100644
--- a/apps/openmw/mwmechanics/actors.hpp
+++ b/apps/openmw/mwmechanics/actors.hpp
@@ -43,6 +43,8 @@ namespace MWMechanics
 
             void killDeadActors ();
 
+            void purgeSpellEffects (int casterActorId);
+
         public:
 
             Actors();
diff --git a/apps/openmw/mwmechanics/summoning.cpp b/apps/openmw/mwmechanics/summoning.cpp
index 177378e03..5108e40ff 100644
--- a/apps/openmw/mwmechanics/summoning.cpp
+++ b/apps/openmw/mwmechanics/summoning.cpp
@@ -61,8 +61,10 @@ namespace MWMechanics
         }
     }
 
-    void UpdateSummonedCreatures::finish()
+    std::set<int> UpdateSummonedCreatures::process()
     {
+        std::set<int> deletedCreatures;
+
         static std::map<int, std::string> summonMap;
         if (summonMap.empty())
         {
@@ -101,6 +103,7 @@ namespace MWMechanics
             {
                 // Effect has ended
                 cleanupSummonedCreature(creatureStats, it->second);
+                deletedCreatures.insert(it->second);
                 creatureMap.erase(it++);
                 continue;
             }
@@ -188,6 +191,8 @@ namespace MWMechanics
             else
                 ++it;
         }
+
+        return deletedCreatures;
     }
 
 }
diff --git a/apps/openmw/mwmechanics/summoning.hpp b/apps/openmw/mwmechanics/summoning.hpp
index 8e418cdeb..2e1c48856 100644
--- a/apps/openmw/mwmechanics/summoning.hpp
+++ b/apps/openmw/mwmechanics/summoning.hpp
@@ -21,7 +21,8 @@ namespace MWMechanics
                             float magnitude, float remainingTime = -1, float totalTime = -1);
 
         /// To call after all effect sources have been visited
-        void finish();
+        /// Returns list of actorIds for creatures that have been deleted due to the magic effect having expired
+        std::set<int> process();
 
     private:
         MWWorld::Ptr mActor;