diff --git a/desmume/src/OGLRender.cpp b/desmume/src/OGLRender.cpp
index a04aed888..ba81e9290 100644
--- a/desmume/src/OGLRender.cpp
+++ b/desmume/src/OGLRender.cpp
@@ -1058,7 +1058,7 @@ Render3DError OpenGLRenderer::_FlushFramebufferConvertOnCPU(const FragmentColor
 		{
 			if ( (dstFramebuffer != NULL) && (dstRGBA5551 != NULL) )
 			{
-				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, iw -= (this->_framebufferWidth * 2))
+				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, ir += this->_framebufferWidth, iw -= this->_framebufferWidth)
 				{
 					size_t x = 0;
 #ifdef ENABLE_SSE2
@@ -1086,14 +1086,14 @@ Render3DError OpenGLRenderer::_FlushFramebufferConvertOnCPU(const FragmentColor
 			}
 			else if (dstFramebuffer != NULL)
 			{
-				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, iw -= (this->_framebufferWidth * 2))
+				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, ir += this->_framebufferWidth, iw -= this->_framebufferWidth)
 				{
 					ConvertColorBuffer8888To6665<true>((u32 *)srcFramebuffer + ir, (u32 *)dstFramebuffer + iw, pixCount);
 				}
 			}
 			else
 			{
-				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, iw -= (this->_framebufferWidth * 2))
+				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, ir += this->_framebufferWidth, iw -= this->_framebufferWidth)
 				{
 					ConvertColorBuffer8888To5551<true, false>((u32 *)srcFramebuffer + ir, dstRGBA5551 + iw, pixCount);
 				}
@@ -1103,7 +1103,7 @@ Render3DError OpenGLRenderer::_FlushFramebufferConvertOnCPU(const FragmentColor
 		{
 			if ( (dstFramebuffer != NULL) && (dstRGBA5551 != NULL) )
 			{
-				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, iw -= (this->_framebufferWidth * 2))
+				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, ir += this->_framebufferWidth, iw -= this->_framebufferWidth)
 				{
 					size_t x = 0;
 #ifdef ENABLE_SSE2
@@ -1144,7 +1144,7 @@ Render3DError OpenGLRenderer::_FlushFramebufferConvertOnCPU(const FragmentColor
 			}
 			else
 			{
-				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, iw -= (this->_framebufferWidth * 2))
+				for (size_t y = 0, ir = 0, iw = ((this->_framebufferHeight - 1) * this->_framebufferWidth); y < this->_framebufferHeight; y++, ir += this->_framebufferWidth, iw -= this->_framebufferWidth)
 				{
 					ConvertColorBuffer8888To5551<true, false>((u32 *)srcFramebuffer + ir, dstRGBA5551 + iw, pixCount);
 				}