diff --git a/apps/openmw/mwrender/renderingmanager.cpp b/apps/openmw/mwrender/renderingmanager.cpp
index dc5373b0b..1d149ccbc 100644
--- a/apps/openmw/mwrender/renderingmanager.cpp
+++ b/apps/openmw/mwrender/renderingmanager.cpp
@@ -860,8 +860,7 @@ namespace MWRender
     {
         RenderingManager::RayResult result;
         result.mHit = false;
-        result.mHitRefnum.mContentFile = -1;
-        result.mHitRefnum.mIndex = -1;
+        result.mHitRefnum.unset();
         result.mRatio = 0;
         if (intersector->containsIntersections())
         {
diff --git a/components/nifosg/nifloader.cpp b/components/nifosg/nifloader.cpp
index ae1726f06..a01404595 100644
--- a/components/nifosg/nifloader.cpp
+++ b/components/nifosg/nifloader.cpp
@@ -238,7 +238,7 @@ namespace NifOsg
         std::string mFilename;
         unsigned int mVersion, mUserVersion, mBethVersion;
 
-        size_t mFirstRootTextureIndex = -1;
+        size_t mFirstRootTextureIndex{~0u};
         bool mFoundFirstRootTexturingProperty = false;
 
         bool mHasNightDayLabel = false;
diff --git a/components/sceneutil/lightmanager.cpp b/components/sceneutil/lightmanager.cpp
index 8f242daee..5c08b22c4 100644
--- a/components/sceneutil/lightmanager.cpp
+++ b/components/sceneutil/lightmanager.cpp
@@ -132,7 +132,7 @@ namespace SceneUtil
             if (value[0] < 0)
             {
                 positiveColor *= -1.0;
-                signBit = -1;
+                signBit = ~0u;
             }
             unsigned int packedColor = asRGBA(positiveColor);
             std::memcpy(&(*mData)[getOffset(index, Diffuse)], &packedColor, sizeof(unsigned int));