diff --git a/src/PostProcessor.cpp b/src/PostProcessor.cpp
index 56f414ba..102e6041 100644
--- a/src/PostProcessor.cpp
+++ b/src/PostProcessor.cpp
@@ -95,7 +95,8 @@ PostProcessor & PostProcessor::get()
 
 void PostProcessor::_preDraw(FrameBuffer * _pBuffer)
 {
-	if (!m_pResultBuffer || m_pResultBuffer->m_width != _pBuffer->m_width)
+	if (!m_pResultBuffer || m_pResultBuffer->m_width != _pBuffer->m_width ||
+		m_pResultBuffer->m_scale != _pBuffer->m_scale)
 		_createResultBuffer(_pBuffer);
 
 	if (_pBuffer->m_pTexture->frameBufferTexture == CachedTexture::fbMultiSample) {