diff --git a/apps/opencs/view/tools/searchsubview.cpp b/apps/opencs/view/tools/searchsubview.cpp
index 07ba7907e7..d687cbeb3f 100644
--- a/apps/opencs/view/tools/searchsubview.cpp
+++ b/apps/opencs/view/tools/searchsubview.cpp
@@ -36,7 +36,7 @@ void CSVTools::SearchSubView::replace (bool selection)
     // in a single string.
     for (std::vector<int>::const_reverse_iterator iter (indices.rbegin()); iter!=indices.rend(); ++iter)
     {
-        CSMWorld::UniversalId id = model.getUniversalId (*iter);
+        const CSMWorld::UniversalId& id = model.getUniversalId (*iter);
 
         CSMWorld::UniversalId::Type type = CSMWorld::UniversalId::getParentType (id.getType());
 
diff --git a/apps/openmw/mwgui/inventorywindow.cpp b/apps/openmw/mwgui/inventorywindow.cpp
index eead3919e0..f53ba21f9f 100644
--- a/apps/openmw/mwgui/inventorywindow.cpp
+++ b/apps/openmw/mwgui/inventorywindow.cpp
@@ -704,7 +704,7 @@ namespace MWGui
         if (!MWBase::Environment::get().getWindowManager()->isAllowed(GW_Inventory))
             return;
         // make sure the object is of a type that can be picked up
-        std::string type = object.getTypeName();
+        const std::string& type = object.getTypeName();
         if ( (type != typeid(ESM::Apparatus).name())
             && (type != typeid(ESM::Armor).name())
             && (type != typeid(ESM::Book).name())
diff --git a/apps/openmw/mwworld/inventorystore.cpp b/apps/openmw/mwworld/inventorystore.cpp
index d96447f87d..0b8af4463c 100644
--- a/apps/openmw/mwworld/inventorystore.cpp
+++ b/apps/openmw/mwworld/inventorystore.cpp
@@ -143,7 +143,7 @@ MWWorld::ContainerStoreIterator MWWorld::InventoryStore::add(const Ptr& itemPtr,
     if (allowAutoEquip && actorPtr != MWMechanics::getPlayer()
             && actorPtr.getClass().isNpc() && !actorPtr.getClass().getNpcStats(actorPtr).isWerewolf())
     {
-        std::string type = itemPtr.getTypeName();
+        const std::string& type = itemPtr.getTypeName();
         if (type == typeid(ESM::Armor).name() || type == typeid(ESM::Clothing).name())
             autoEquip(actorPtr);
     }
@@ -748,7 +748,7 @@ int MWWorld::InventoryStore::remove(const Ptr& item, int count, const Ptr& actor
     if (equipReplacement && wasEquipped && (actor != MWMechanics::getPlayer())
             && actor.getClass().isNpc() && !actor.getClass().getNpcStats(actor).isWerewolf())
     {
-        std::string type = item.getTypeName();
+        const std::string& type = item.getTypeName();
         if (type == typeid(ESM::Armor).name() || type == typeid(ESM::Clothing).name())
             autoEquip(actor);
     }
diff --git a/components/resource/bulletshape.cpp b/components/resource/bulletshape.cpp
index ce896610a9..798a6778e6 100644
--- a/components/resource/bulletshape.cpp
+++ b/components/resource/bulletshape.cpp
@@ -58,7 +58,7 @@ btCollisionShape* BulletShape::duplicateCollisionShape(const btCollisionShape *s
         for(int i = 0;i < numShapes;++i)
         {
             btCollisionShape *child = duplicateCollisionShape(comp->getChildShape(i));
-            btTransform trans = comp->getChildTransform(i);
+            const btTransform& trans = comp->getChildTransform(i);
             newShape->addChildShape(trans, child);
         }