diff --git a/apps/openmw/mwmechanics/actors.cpp b/apps/openmw/mwmechanics/actors.cpp
index 36397ac09b..a215a71a32 100644
--- a/apps/openmw/mwmechanics/actors.cpp
+++ b/apps/openmw/mwmechanics/actors.cpp
@@ -924,12 +924,7 @@ namespace MWMechanics
 
     Actors::~Actors()
     {
-      PtrControllerMap::iterator it(mActors.begin());
-      for (; it != mActors.end(); ++it)
-      {
-        delete it->second;
-        it->second = NULL;
-      }
+        clear();
     }
 
     void Actors::addActor (const MWWorld::Ptr& ptr, bool updateImmediately)
@@ -1359,6 +1354,13 @@ namespace MWMechanics
 
     void Actors::clear()
     {
+        PtrControllerMap::iterator it(mActors.begin());
+        for (; it != mActors.end(); ++it)
+        {
+            delete it->second;
+            it->second = NULL;
+        }
+        mActors.clear();
         mDeathCount.clear();
     }
 }
diff --git a/apps/openmw/mwworld/worldimp.cpp b/apps/openmw/mwworld/worldimp.cpp
index 10c2e4974f..14746526ba 100644
--- a/apps/openmw/mwworld/worldimp.cpp
+++ b/apps/openmw/mwworld/worldimp.cpp
@@ -2111,8 +2111,8 @@ namespace MWWorld
     void World::enableActorCollision(const MWWorld::Ptr& actor, bool enable)
     {
         OEngine::Physic::PhysicActor *physicActor = mPhysEngine->getCharacter(actor.getRefData().getHandle());
-
-        physicActor->enableCollisionBody(enable);
+        if (physicActor)
+            physicActor->enableCollisionBody(enable);
     }
 
     bool World::findInteriorPosition(const std::string &name, ESM::Position &pos)