diff --git a/trunk/src/drivers/win/video.cpp b/trunk/src/drivers/win/video.cpp
index 397548f2..b07a92ae 100644
--- a/trunk/src/drivers/win/video.cpp
+++ b/trunk/src/drivers/win/video.cpp
@@ -246,7 +246,7 @@ void recalculateBestFitRect(int width, int height)
 	double screen_width = VNSWID_NU(xres);
 	double screen_height = FSettings.TotalScanlines();
 	if (eoptions & EO_TVASPECT)
-		screen_width = ceil(screen_height * (screen_width / 256) * (tvAspectX / tvAspectY));
+		screen_width = ceil(screen_height * (screen_width / xres) * (tvAspectX / tvAspectY));
 
 	int center_x = width / 2;
 	int center_y = height / 2;
diff --git a/trunk/src/drivers/win/window.cpp b/trunk/src/drivers/win/window.cpp
index 45ac3e8d..05ec8aff 100644
--- a/trunk/src/drivers/win/window.cpp
+++ b/trunk/src/drivers/win/window.cpp
@@ -344,7 +344,7 @@ void CalcWindowSize(RECT *al)
 	double screen_width = VNSWID_NU(xres);
 	double screen_height = FSettings.TotalScanlines();
 	if (eoptions & EO_TVASPECT)
-		screen_width = ceil(screen_height * (screen_width / 256) * (tvAspectX / tvAspectY));
+		screen_width = ceil(screen_height * (screen_width / xres) * (tvAspectX / tvAspectY));
 
 	al->left = 0;
 	al->top = 0;