diff --git a/src/graphics/rtts.cpp b/src/graphics/rtts.cpp
index b77a61a3e..4c958d762 100644
--- a/src/graphics/rtts.cpp
+++ b/src/graphics/rtts.cpp
@@ -53,6 +53,7 @@ static GLuint generateFBO(GLuint ColorAttachement, GLuint DepthAttachement)
 
 RTT::RTT(size_t width, size_t height)
 {
+    m_shadow_FBO = NULL;
     initGL();
     using namespace video;
     using namespace core;
@@ -197,14 +198,14 @@ RTT::RTT(size_t width, size_t height)
 
         somevector.clear();
         somevector.push_back(shadowColorTex);
-        shadowFBO = new FrameBuffer(somevector, shadowDepthTex, 1024, 1024, true);
+        m_shadow_FBO = new FrameBuffer(somevector, shadowDepthTex, 1024, 1024, true);
     }
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
 RTT::~RTT()
 {
-    delete shadowFBO;
+    delete m_shadow_FBO;
     glDeleteTextures(RTT_COUNT, RenderTargetTextures);
     glDeleteTextures(1, &DepthStencilTexture);
     if (irr_driver->getGLSLVersion() >= 150)
diff --git a/src/graphics/rtts.hpp b/src/graphics/rtts.hpp
index 96127b3f2..bd5b7bca8 100644
--- a/src/graphics/rtts.hpp
+++ b/src/graphics/rtts.hpp
@@ -37,7 +37,7 @@ public:
     RTT(size_t width, size_t height);
     ~RTT();
 
-    FrameBuffer &getShadowFBO() { return *shadowFBO; }
+    FrameBuffer &getShadowFBO() { return *m_shadow_FBO; }
     unsigned getShadowDepthTex() const { return shadowDepthTex; }
 
     unsigned getDepthStencilTexture() const { return DepthStencilTexture; }
@@ -49,7 +49,7 @@ private:
     unsigned DepthStencilTexture;
 
     unsigned shadowColorTex, shadowDepthTex;
-    FrameBuffer* shadowFBO;
+    FrameBuffer* m_shadow_FBO;
 
     LEAK_CHECK();
 };