diff --git a/apps/openmw/mwrender/landmanager.cpp b/apps/openmw/mwrender/landmanager.cpp
index 63ced5d12c..0358a9d411 100644
--- a/apps/openmw/mwrender/landmanager.cpp
+++ b/apps/openmw/mwrender/landmanager.cpp
@@ -19,8 +19,8 @@ namespace MWRender
 
     osg::ref_ptr<ESMTerrain::LandObject> LandManager::getLand(ESM::ExteriorCellLocation cellIndex)
     {
-        osg::ref_ptr<osg::Object> obj = mCache->getRefFromObjectCache(cellIndex);
-        if (obj)
+        const osg::ref_ptr<osg::Object> obj = mCache->getRefFromObjectCache(cellIndex);
+        if (obj != nullptr)
             return static_cast<ESMTerrain::LandObject*>(obj.get());
         else
         {
@@ -29,7 +29,7 @@ namespace MWRender
             if (ESM::isEsm4Ext(cellIndex.mWorldspace))
             {
                 const ESM4::Land* land = world.getStore().get<ESM4::Land>().search(cellIndex);
-                if (!land)
+                if (land == nullptr)
                     return nullptr;
                 osg::ref_ptr<ESMTerrain::LandObject> landObj(new ESMTerrain::LandObject(*land, mLoadFlags));
                 mCache->addEntryToObjectCache(cellIndex, landObj.get());
@@ -38,7 +38,7 @@ namespace MWRender
             else
             {
                 const ESM::Land* land = world.getStore().get<ESM::Land>().search(cellIndex.mX, cellIndex.mY);
-                if (!land)
+                if (land == nullptr)
                     return nullptr;
                 osg::ref_ptr<ESMTerrain::LandObject> landObj(new ESMTerrain::LandObject(*land, mLoadFlags));
                 mCache->addEntryToObjectCache(cellIndex, landObj.get());