diff --git a/libs/openFrameworks/gl/ofCubeMap.h b/libs/openFrameworks/gl/ofCubeMap.h
index 4a79e88fde9..9b77b7aa891 100644
--- a/libs/openFrameworks/gl/ofCubeMap.h
+++ b/libs/openFrameworks/gl/ofCubeMap.h
@@ -97,7 +97,7 @@ class ofCubeMap {
 	void drawPrefilteredCube(float aRoughness);
 
 	bool isEnabled() { return data->isEnabled; }
-	const bool isEnabled() const { return data->isEnabled; }
+	bool isEnabled() const { return data->isEnabled; }
 	void setEnabled(bool ab) { data->isEnabled = ab; }
 
 	bool hasCubeMap();
diff --git a/libs/openFrameworks/gl/ofMaterial.h b/libs/openFrameworks/gl/ofMaterial.h
index 8295723cf33..c75c1d4ddf2 100644
--- a/libs/openFrameworks/gl/ofMaterial.h
+++ b/libs/openFrameworks/gl/ofMaterial.h
@@ -182,7 +182,7 @@ class ofMaterial : public ofBaseMaterial {
 
 	/// \brief is this material pbr. Setting PBR functions or textures will automatically set the material to pbr.\nCan also be set calling setPBR(bool);
 	/// \return is the material pbr.
-	const bool isPBR() const { return data.isPbr; }
+	bool isPBR() const { return data.isPbr; }
 	/// \brief enable or disable PBR for this material. Default is disabled.
 	void setPBR(bool ab);
 
diff --git a/libs/openFrameworks/gl/ofShader.cpp b/libs/openFrameworks/gl/ofShader.cpp
index 54ac8ab094a..fc65da70cbc 100644
--- a/libs/openFrameworks/gl/ofShader.cpp
+++ b/libs/openFrameworks/gl/ofShader.cpp
@@ -439,7 +439,7 @@ string ofShader::parseForIncludes(const string & source, const of::filesystem::p
 string ofShader::parseForIncludes(const string & source, vector<string> & included, int level, const of::filesystem::path & sourceDirectoryPath) {
 
     if (level > 32) {
-        ofLogError("ofShader", "glsl header inclusion depth limit reached, might be caused by cyclic header inclusion");
+        ofLogError("ofShader") << "glsl header inclusion depth limit reached, might be caused by cyclic header inclusion";
         return "";
     }
 
diff --git a/libs/openFrameworks/gl/ofShadow.cpp b/libs/openFrameworks/gl/ofShadow.cpp
index 2d1147d3f0a..59236b78138 100644
--- a/libs/openFrameworks/gl/ofShadow.cpp
+++ b/libs/openFrameworks/gl/ofShadow.cpp
@@ -649,7 +649,7 @@ void ofShadow::setEnabled( bool ab ) {
 }
 
 //--------------------------------------------------------------
-const bool ofShadow::isMultiCubeFacePass() const {
+bool ofShadow::isMultiCubeFacePass() const {
 	if( data->lightType == OF_LIGHT_POINT ) {
 		return !isSingleOmniPass();
 	}
@@ -657,12 +657,12 @@ const bool ofShadow::isMultiCubeFacePass() const {
 }
 
 //--------------------------------------------------------------
-const bool ofShadow::isSingleOmniPass() const {
+bool ofShadow::isSingleOmniPass() const {
 	return mBSinglePass;
 }
 
 //--------------------------------------------------------------
-const int ofShadow::getNumShadowDepthPasses() const {
+int ofShadow::getNumShadowDepthPasses() const {
 	if(isMultiCubeFacePass()) {
 		return 6;
 	}
@@ -1142,11 +1142,11 @@ void ofShadow::_updateNumShadows() {
 #include "shaders/shadowDepth.frag"
 #include "shaders/shadowDepthCubeGeom.glsl"
 
-const bool ofShadow::setupShadowDepthShader(ofShader& ashader, const std::string aShaderMain) const {
+bool ofShadow::setupShadowDepthShader(ofShader& ashader, const std::string aShaderMain) const {
 	return setupShadowDepthShader( ashader, data->lightType, aShaderMain, isSingleOmniPass() );
 }
 
-const bool ofShadow::setupShadowDepthShader(ofShader& ashader, int aLightType, const std::string aShaderMain, bool abSinglePass) const {
+bool ofShadow::setupShadowDepthShader(ofShader& ashader, int aLightType, const std::string aShaderMain, bool abSinglePass) const {
 	std::string gversion = "#version 150\n";
 	
 	#ifdef TARGET_OPENGLES
diff --git a/libs/openFrameworks/gl/ofShadow.h b/libs/openFrameworks/gl/ofShadow.h
index b65457dfd72..55938fe3ad5 100644
--- a/libs/openFrameworks/gl/ofShadow.h
+++ b/libs/openFrameworks/gl/ofShadow.h
@@ -126,9 +126,9 @@ class ofShadow {
 	void setNearClip( float anear ) { data->nearClip = anear; }
 	void setFarClip( float afar ) { data->farClip = afar; }
 	
-	const bool isMultiCubeFacePass() const;
-	const bool isSingleOmniPass() const;
-	const int getNumShadowDepthPasses() const;
+	bool isMultiCubeFacePass() const;
+	bool isSingleOmniPass() const;
+	int getNumShadowDepthPasses() const;
 	void setSingleOmniPass( bool ab );
 	int getDepthMapWidth();
 	int getDepthMapHeight();
@@ -148,13 +148,13 @@ class ofShadow {
 	const float& getStrength() { return data->strength; }
 	void setStrength(float astrength) { data->strength = astrength; }
 	
-	const float getBias() { return data->bias; }
+	float getBias() const { return data->bias; }
 	void setBias( float abias ) { data->bias = abias; }
 	
-	const float getNormalBias() { return data->normalBias; }
+	float getNormalBias() const { return data->normalBias; }
 	void setNormalBias( float abias ) { data->normalBias = abias; }
 	
-	const float getSampleRadius() { return data->sampleRadius; }
+	float getSampleRadius() const { return data->sampleRadius; }
 	void setSampleRadius( float aradius ) { data->sampleRadius = aradius; }
 	
 	void setAreaLightSize( float awidth, float aheight ) {mAreaLightWidth=awidth;mAreaLightHeight=aheight;};
@@ -165,8 +165,8 @@ class ofShadow {
 	std::string getShadowTypeAsString();
 		
 	const ofShader & getDepthShader(ofGLProgrammableRenderer & renderer) const;
-	const bool setupShadowDepthShader(ofShader& ashader, const std::string aShaderMain) const;
-	const bool setupShadowDepthShader(ofShader& ashader, int aLightType, const std::string aShaderMain, bool abSinglePass) const;
+	bool setupShadowDepthShader(ofShader& ashader, const std::string aShaderMain) const;
+	bool setupShadowDepthShader(ofShader& ashader, int aLightType, const std::string aShaderMain, bool abSinglePass) const;
 	void updateDepth(const ofShader & shader,ofGLProgrammableRenderer & renderer) const;
 	void updateDepth(const ofShader & shader,GLenum aCubeFace,ofGLProgrammableRenderer & renderer) const;
 	
diff --git a/libs/openFrameworks/graphics/ofImage.cpp b/libs/openFrameworks/graphics/ofImage.cpp
index d2dd580306d..95a4d97da9b 100644
--- a/libs/openFrameworks/graphics/ofImage.cpp
+++ b/libs/openFrameworks/graphics/ofImage.cpp
@@ -533,7 +533,7 @@ static bool saveImage(const ofPixels_<PixelType> & _pix, ofBuffer & buffer, ofIm
 	ofInitFreeImage();
 
 	if (_pix.isAllocated() == false){
-		ofLogError("ofImage","saveImage(): couldn't save to ofBuffer, pixels are not allocated");
+		ofLogError("ofImage") << "saveImage(): couldn't save to ofBuffer, pixels are not allocated";
 		return false;
 	}