diff --git a/apps/openmw/mwworld/cellstore.cpp b/apps/openmw/mwworld/cellstore.cpp
index 605c8f9d2..545bbd4b3 100644
--- a/apps/openmw/mwworld/cellstore.cpp
+++ b/apps/openmw/mwworld/cellstore.cpp
@@ -466,7 +466,7 @@ namespace MWWorld
         // List moved references, from separately tracked list.
         for (ESM::CellRefTracker::const_iterator it = mCell->mLeasedRefs.begin(); it != mCell->mLeasedRefs.end(); ++it)
         {
-            ESM::CellRef &ref = const_cast<ESM::CellRef&>(*it);
+            const ESM::CellRef &ref = *it;
 
             mIds.push_back(Misc::StringUtils::lowerCase(ref.mRefID));
         }
diff --git a/apps/openmw/mwworld/containerstore.cpp b/apps/openmw/mwworld/containerstore.cpp
index bd14720f7..ba70e2f8f 100644
--- a/apps/openmw/mwworld/containerstore.cpp
+++ b/apps/openmw/mwworld/containerstore.cpp
@@ -86,7 +86,7 @@ void MWWorld::ContainerStore::storeState (const LiveCellRef<T>& ref, ESM::Object
 }
 
 template<typename T>
-void MWWorld::ContainerStore::storeStates (const CellRefList<T>& collection,
+void MWWorld::ContainerStore::storeStates (CellRefList<T>& collection,
     std::vector<std::pair<ESM::ObjectState, int> >& states, bool equipable) const
 {
     for (typename CellRefList<T>::List::const_iterator iter (collection.mList.begin());
@@ -641,7 +641,7 @@ MWWorld::Ptr MWWorld::ContainerStore::search (const std::string& id)
     return Ptr();
 }
 
-void MWWorld::ContainerStore::writeState (ESM::InventoryState& state) const
+void MWWorld::ContainerStore::writeState (ESM::InventoryState& state)
 {
     state.mItems.clear();
 
@@ -688,7 +688,6 @@ void MWWorld::ContainerStore::readState (const ESM::InventoryState& state)
             case ESM::REC_REPA: getState (repairs, iter->first); break;
             case ESM::REC_WEAP: setSlot (getState (weapons, iter->first), slot); break;
             case ESM::REC_LIGH: setSlot (getState (lights, iter->first), slot); break;
-
             default:
                 std::cerr << "invalid item type in inventory state, refid " << state.mRef.mRefID << std::endl;
                 break;
diff --git a/apps/openmw/mwworld/containerstore.hpp b/apps/openmw/mwworld/containerstore.hpp
index 68ee41a1d..f7c8a369c 100644
--- a/apps/openmw/mwworld/containerstore.hpp
+++ b/apps/openmw/mwworld/containerstore.hpp
@@ -85,7 +85,7 @@ namespace MWWorld
             void storeState (const LiveCellRef<T>& ref, ESM::ObjectState& state) const;
 
             template<typename T>
-            void storeStates (const CellRefList<T>& collection,
+            void storeStates (CellRefList<T>& collection,
                 std::vector<std::pair<ESM::ObjectState, int> >& states,
                 bool equipable = false) const;
 
@@ -171,7 +171,8 @@ namespace MWWorld
 
             Ptr search (const std::string& id);
 
-            virtual void writeState (ESM::InventoryState& state) const;
+            /// \todo make this method const once const-correct ContainerStoreIterators are available
+            virtual void writeState (ESM::InventoryState& state);
 
             virtual void readState (const ESM::InventoryState& state);
 
diff --git a/apps/openmw/mwworld/inventorystore.cpp b/apps/openmw/mwworld/inventorystore.cpp
index 445b42d8d..be93824e5 100644
--- a/apps/openmw/mwworld/inventorystore.cpp
+++ b/apps/openmw/mwworld/inventorystore.cpp
@@ -58,10 +58,24 @@ int MWWorld::InventoryStore::getSlot (const MWWorld::LiveCellRefBase& ref) const
     return -1;
 }
 
-void MWWorld::InventoryStore::setSlot (const MWWorld::ContainerStoreIterator& iter, int slot)
+void MWWorld::InventoryStore::setSlot (const MWWorld::ContainerStoreIterator& iter, int relativeSlot)
 {
-    if (iter!=end() && slot>=0 && slot<Slots)
-        mSlots[slot] = iter;
+    if (relativeSlot < 0 || iter == end())
+        return;
+
+    // make sure the item can actually be equipped in this slot
+    std::pair<std::vector<int>, bool> allowedSlots = iter->getClass().getEquipmentSlots(*iter);
+    relativeSlot = std::min(int(allowedSlots.first.size()-1), relativeSlot);
+
+    // unstack if required
+    if (!allowedSlots.second && iter->getRefData().getCount() > 1)
+    {
+        MWWorld::ContainerStoreIterator newIter = addNewStack(*iter, 1);
+        iter->getRefData().setCount(iter->getRefData().getCount()-1);
+        mSlots[allowedSlots.first[relativeSlot]] = newIter;
+    }
+    else
+        mSlots[allowedSlots.first[relativeSlot]] = iter;
 }
 
 MWWorld::InventoryStore::InventoryStore()
@@ -703,7 +717,7 @@ bool MWWorld::InventoryStore::isEquipped(const MWWorld::Ptr &item)
     return false;
 }
 
-void MWWorld::InventoryStore::writeState(ESM::InventoryState &state) const
+void MWWorld::InventoryStore::writeState(ESM::InventoryState &state)
 {
     MWWorld::ContainerStore::writeState(state);
 
diff --git a/apps/openmw/mwworld/inventorystore.hpp b/apps/openmw/mwworld/inventorystore.hpp
index 9fd18c54b..7bd977e39 100644
--- a/apps/openmw/mwworld/inventorystore.hpp
+++ b/apps/openmw/mwworld/inventorystore.hpp
@@ -116,7 +116,7 @@ namespace MWWorld
             virtual int getSlot (const MWWorld::LiveCellRefBase& ref) const;
             ///< Return inventory slot that \a ref is in or -1 (if \a ref is not in a slot).
 
-            virtual void setSlot (const MWWorld::ContainerStoreIterator& iter, int slot);
+            virtual void setSlot (const MWWorld::ContainerStoreIterator& iter, int relativeSlot);
             ///< Set slot for \a iter. Ignored if \a iter is an end iterator or if slot==-1.
 
         public:
@@ -209,7 +209,7 @@ namespace MWWorld
             virtual void clear();
             ///< Empty container.
 
-            virtual void writeState (ESM::InventoryState& state) const;
+            virtual void writeState (ESM::InventoryState& state);
 
             virtual void readState (const ESM::InventoryState& state);
     };
diff --git a/apps/openmw/mwworld/worldimp.cpp b/apps/openmw/mwworld/worldimp.cpp
index 104605e65..f7d5d9616 100644
--- a/apps/openmw/mwworld/worldimp.cpp
+++ b/apps/openmw/mwworld/worldimp.cpp
@@ -2031,7 +2031,7 @@ namespace MWWorld
     bool World::isOnGround(const MWWorld::Ptr &ptr) const
     {
         RefData &refdata = ptr.getRefData();
-        const OEngine::Physic::PhysicActor *physactor = mPhysEngine->getCharacter(refdata.getHandle());
+        OEngine::Physic::PhysicActor *physactor = mPhysEngine->getCharacter(refdata.getHandle());
 
         if(!physactor)
             return false;
@@ -2049,7 +2049,7 @@ namespace MWWorld
                               mPhysEngine);
             if(tracer.mFraction < 1.0f) // collision, must be close to something below
             {
-                const_cast<OEngine::Physic::PhysicActor *> (physactor)->setOnGround(true);
+                physactor->setOnGround(true);
                 return true;
             }
             else
diff --git a/components/esm/inventorystate.hpp b/components/esm/inventorystate.hpp
index 3d4407e7b..13af28e30 100644
--- a/components/esm/inventorystate.hpp
+++ b/components/esm/inventorystate.hpp
@@ -15,6 +15,7 @@ namespace ESM
     /// \brief State for inventories and containers
     struct InventoryState
     {
+        /// <ObjectState, relative equipment slot>
         std::vector<std::pair<ObjectState, int> > mItems;
 
         std::map<std::string, int> mLevelledItemMap;