diff --git a/apps/essimporter/converter.hpp b/apps/essimporter/converter.hpp
index 1772e0e2d..2694ea570 100644
--- a/apps/essimporter/converter.hpp
+++ b/apps/essimporter/converter.hpp
@@ -526,7 +526,10 @@ public:
 class ConvertGAME : public Converter
 {
 public:
-    ConvertGAME() : mHasGame(false) {}
+    ConvertGAME()
+        : mHasGame(false)
+    {
+    }
 
     virtual void read(ESM::ESMReader &esm)
     {
diff --git a/apps/essimporter/importgame.hpp b/apps/essimporter/importgame.hpp
index fca7d72a0..d8051a527 100644
--- a/apps/essimporter/importgame.hpp
+++ b/apps/essimporter/importgame.hpp
@@ -14,13 +14,13 @@ namespace ESSImport
     {
         struct GMDT
         {
-           char mCellName[64];
-           int mFogColour;
-           float mFogDensity;
-           int mCurrentWeather, mNextWeather;
-           int mWeatherTransition; // 0-100 transition between weathers, top 3 bytes may be garbage
-           float mTimeOfNextTransition; // weather changes when gamehour == timeOfNextTransition
-           int mMasserPhase, mSecundaPhase; // top 3 bytes may be garbage
+           char mCellName[64] {};
+           int mFogColour {0};
+           float mFogDensity {0.f};
+           int mCurrentWeather {0}, mNextWeather {0};
+           int mWeatherTransition {0}; // 0-100 transition between weathers, top 3 bytes may be garbage
+           float mTimeOfNextTransition {0.f}; // weather changes when gamehour == timeOfNextTransition
+           int mMasserPhase {0}, mSecundaPhase {0}; // top 3 bytes may be garbage
         };
 
         GMDT mGMDT;
diff --git a/apps/openmw/mwsound/openal_output.cpp b/apps/openmw/mwsound/openal_output.cpp
index 42dd6b5fd..833b40e38 100644
--- a/apps/openmw/mwsound/openal_output.cpp
+++ b/apps/openmw/mwsound/openal_output.cpp
@@ -1483,7 +1483,8 @@ void OpenAL_Output::resumeSounds(int types)
 
 
 OpenAL_Output::OpenAL_Output(SoundManager &mgr)
-  : Sound_Output(mgr), mDevice(0), mContext(0)
+  : Sound_Output(mgr)
+  , mDevice(0), mContext(0)
   , mListenerPos(0.0f, 0.0f, 0.0f), mListenerEnv(Env_Normal)
   , mWaterFilter(0), mWaterEffect(0), mDefaultEffect(0), mEffectSlot(0)
   , mStreamThread(new StreamThread)
diff --git a/apps/openmw/mwsound/openal_output.hpp b/apps/openmw/mwsound/openal_output.hpp
index afc869733..b6a26c99a 100644
--- a/apps/openmw/mwsound/openal_output.hpp
+++ b/apps/openmw/mwsound/openal_output.hpp
@@ -26,10 +26,10 @@ namespace MWSound
         struct {
             bool EXT_EFX : 1;
             bool SOFT_HRTF : 1;
-        } ALC;
+        } ALC = {false, false};
         struct {
             bool SOFT_source_spatialize : 1;
-        } AL;
+        } AL = {false};
 
         typedef std::deque<ALuint> IDDq;
         IDDq mFreeSources;
diff --git a/components/esm/loadcell.hpp b/components/esm/loadcell.hpp
index 249d812b1..bc5016718 100644
--- a/components/esm/loadcell.hpp
+++ b/components/esm/loadcell.hpp
@@ -78,14 +78,14 @@ struct Cell
 
   struct DATAstruct
   {
-    int mFlags;
-    int mX, mY;
+      int mFlags {0};
+      int mX {0}, mY {0};
   };
 
   struct AMBIstruct
   {
-    Color mAmbient, mSunlight, mFog;
-    float mFogDensity;
+      Color mAmbient {0}, mSunlight {0}, mFog {0};
+      float mFogDensity {0.f};
   };
 
   Cell() : mName(""),