diff --git a/src/graphics/abstract_renderer.cpp b/src/graphics/abstract_renderer.cpp
index e04fa848b..c1dfc97df 100644
--- a/src/graphics/abstract_renderer.cpp
+++ b/src/graphics/abstract_renderer.cpp
@@ -194,11 +194,7 @@ void AbstractRenderer::drawJoint(bool drawline, bool drawname,
     }
 } //drawJoint
 
-
-AbstractRenderer::AbstractRenderer()
-{
-    m_rtts                  = NULL;
-}    
+    
 
 
 
diff --git a/src/graphics/abstract_renderer.hpp b/src/graphics/abstract_renderer.hpp
index 96131ec94..775c4d87c 100644
--- a/src/graphics/abstract_renderer.hpp
+++ b/src/graphics/abstract_renderer.hpp
@@ -48,7 +48,6 @@ protected:
 
 
 public:
-    AbstractRenderer();
     virtual ~AbstractRenderer(){}
     
     RTT* getRTT() { return m_rtts;} //FIXME: remove this
diff --git a/src/graphics/fixed_pipeline_renderer.cpp b/src/graphics/fixed_pipeline_renderer.cpp
index a62953998..317766dc0 100644
--- a/src/graphics/fixed_pipeline_renderer.cpp
+++ b/src/graphics/fixed_pipeline_renderer.cpp
@@ -24,9 +24,6 @@
 #include "utils/profiler.hpp"
 
 
-
-FixedPipelineRenderer::FixedPipelineRenderer(): AbstractRenderer() {}
-
     
 void FixedPipelineRenderer::onLoadWorld()
 {
diff --git a/src/graphics/fixed_pipeline_renderer.hpp b/src/graphics/fixed_pipeline_renderer.hpp
index b96172f35..b93998280 100644
--- a/src/graphics/fixed_pipeline_renderer.hpp
+++ b/src/graphics/fixed_pipeline_renderer.hpp
@@ -23,7 +23,6 @@
 class FixedPipelineRenderer: public AbstractRenderer
 {
 public:
-    FixedPipelineRenderer();
     
     void onLoadWorld()  ;
     void onUnloadWorld();
diff --git a/src/graphics/rtts.hpp b/src/graphics/rtts.hpp
index c3d860b67..0b55d5e15 100644
--- a/src/graphics/rtts.hpp
+++ b/src/graphics/rtts.hpp
@@ -20,6 +20,7 @@
 
 #include "utils/ptr_vector.hpp"
 #include "utils/leak_check.hpp"
+#include <stddef.h>
 
 class FrameBuffer;
 
diff --git a/src/graphics/shader_based_renderer.cpp b/src/graphics/shader_based_renderer.cpp
index 6bf45a631..cd64f85db 100644
--- a/src/graphics/shader_based_renderer.cpp
+++ b/src/graphics/shader_based_renderer.cpp
@@ -578,8 +578,9 @@ void ShaderBasedRenderer::renderPostProcessing(Camera * const camera)
 }
 
 
-ShaderBasedRenderer::ShaderBasedRenderer():AbstractRenderer()
-{    
+ShaderBasedRenderer::ShaderBasedRenderer()
+{
+    m_rtts                  = NULL;
     m_skybox                = NULL;
     m_spherical_harmonics   = new SphericalHarmonics(irr_driver->getAmbientLight().toSColor());
     m_nb_static_glowing     = 0;