diff --git a/src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramUniformFactory.cpp b/src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramUniformFactory.cpp
index f718bc30..8e3d0360 100644
--- a/src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramUniformFactory.cpp
+++ b/src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramUniformFactory.cpp
@@ -369,10 +369,11 @@ public:
 
 	void update(bool _force) override
 	{
-		if (config.frameBufferEmulation.nativeResFactor == 0)
+		FrameBuffer * pBuffer = frameBufferList().getCurrent();
+		if (pBuffer == nullptr)
 			uScreenScale.set(dwnd().getScaleX(), dwnd().getScaleY(), _force);
 		else
-			uScreenScale.set(float(config.frameBufferEmulation.nativeResFactor), float(config.frameBufferEmulation.nativeResFactor), _force);
+			uScreenScale.set(pBuffer->m_scale, pBuffer->m_scale, _force);
 	}
 
 private: