diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_vertex_buffer_hard.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_vertex_buffer_hard.cpp
index 8f9551248..706b0f0eb 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_vertex_buffer_hard.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_vertex_buffer_hard.cpp
@@ -1219,7 +1219,7 @@ IVertexBufferHardGL *CVertexArrayRangeARB::createVBHardGL(uint size, CVertexBuff
 	nglGenBuffersARB(1, &vertexBufferID);
 #endif
 
-	if (glGetError() != GL_NO_ERROR) return false;
+	if (glGetError() != GL_NO_ERROR) return NULL;
 	_Driver->_DriverGLStates.forceBindARBVertexBuffer(vertexBufferID);
 	switch(_VBType)
 	{
@@ -1256,7 +1256,7 @@ IVertexBufferHardGL *CVertexArrayRangeARB::createVBHardGL(uint size, CVertexBuff
 		nglDeleteBuffersARB(1, &vertexBufferID);
 #endif
 
-		return false;
+		return NULL;
 	}
 	CVertexBufferHardARB *newVbHard= new CVertexBufferHardARB(_Driver, vb);
 	newVbHard->initGL(vertexBufferID, this, _VBType);
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
index ea8be02e9..213959f61 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
@@ -346,9 +346,12 @@ bool CDriverGL::init (uint windowIcon, emptyProc exitFunc)
 #elif defined(NL_OS_MAC)
 
 	// nothing to do
+	nlunreferenced(windowIcon);
 
 #elif defined (NL_OS_UNIX)
 
+	nlunreferenced(windowIcon);
+
 	_dpy = XOpenDisplay(NULL);
 
 	if (_dpy == NULL)