diff --git a/apps/openmw/mwrender/shadows.cpp b/apps/openmw/mwrender/shadows.cpp
index 596c6697a..5a6ccaca6 100644
--- a/apps/openmw/mwrender/shadows.cpp
+++ b/apps/openmw/mwrender/shadows.cpp
@@ -20,10 +20,9 @@ using namespace Ogre;
 using namespace MWRender;
 
 Shadows::Shadows(OEngine::Render::OgreRenderer* rend) :
+    mRendering(rend), mSceneMgr(rend->getScene()), mPSSMSetup(NULL),
     mShadowFar(1000), mFadeStart(0.9)
 {
-    mRendering = rend;
-    mSceneMgr = mRendering->getScene();
     recreate();
 }
 
diff --git a/apps/openmw/mwrender/sky.cpp b/apps/openmw/mwrender/sky.cpp
index 8e7bd3d89..ccef74efb 100644
--- a/apps/openmw/mwrender/sky.cpp
+++ b/apps/openmw/mwrender/sky.cpp
@@ -69,6 +69,7 @@ BillboardObject::BillboardObject( const String& textureName,
 }
 
 BillboardObject::BillboardObject()
+: mNode(NULL), mMaterial(NULL), mEntity(NULL)
 {
 }
 
@@ -222,6 +223,7 @@ SkyManager::SkyManager(Ogre::SceneNode *root, Ogre::Camera *pCamera)
     , mCloudOpacity(0.0f)
     , mCloudSpeed(0.0f)
     , mStarsOpacity(0.0f)
+    , mLightning(NULL)
     , mRemainingTransitionTime(0.0f)
     , mGlareFade(0.0f)
     , mGlare(0.0f)
diff --git a/apps/openmw/mwworld/store.hpp b/apps/openmw/mwworld/store.hpp
index 9a442387b..107db68b1 100644
--- a/apps/openmw/mwworld/store.hpp
+++ b/apps/openmw/mwworld/store.hpp
@@ -590,6 +590,7 @@ namespace MWWorld
         typedef SharedIterator<ESM::Cell> iterator;
 
         Store<ESM::Cell>()
+        : mEsmStore(NULL)
         {}
 
         const ESM::Cell *search(const std::string &id) const {