diff --git a/components/sceneutil/shadow.cpp b/components/sceneutil/shadow.cpp
index 00e6b93a99..9b20544790 100644
--- a/components/sceneutil/shadow.cpp
+++ b/components/sceneutil/shadow.cpp
@@ -86,7 +86,7 @@ namespace SceneUtil
 
         Shader::ShaderManager::DefineMap definesWithShadows;
         definesWithShadows.insert(std::make_pair(std::string("shadows_enabled"), std::string("1")));
-        for (int i = 0; i < mShadowSettings->getNumShadowMapsPerLight(); ++i)
+        for (unsigned int i = 0; i < mShadowSettings->getNumShadowMapsPerLight(); ++i)
             definesWithShadows["shadow_texture_unit_list"] += std::to_string(i) + ",";
         // remove extra comma
         definesWithShadows["shadow_texture_unit_list"] = definesWithShadows["shadow_texture_unit_list"].substr(0, definesWithShadows["shadow_texture_unit_list"].length() - 1);
diff --git a/components/sceneutil/shadow.hpp b/components/sceneutil/shadow.hpp
index 61a564a2a8..6a3fccea64 100644
--- a/components/sceneutil/shadow.hpp
+++ b/components/sceneutil/shadow.hpp
@@ -17,6 +17,8 @@ namespace SceneUtil
 
         ShadowManager(osg::ref_ptr<osg::Group> sceneRoot, osg::ref_ptr<osg::Group> rootNode, unsigned int outdoorShadowCastingMask, unsigned int indoorShadowCastingMask);
 
+        virtual ~ShadowManager() = default;
+
         virtual void setupShadowSettings();
 
         virtual Shader::ShaderManager::DefineMap getShadowDefines();