diff --git a/src/win32/win_vid.c b/src/win32/win_vid.c
index a9dd097b3..cca7810b3 100644
--- a/src/win32/win_vid.c
+++ b/src/win32/win_vid.c
@@ -996,7 +996,7 @@ static INT32 WINAPI VID_SetDirectDrawMode(viddef_t *lvid, vmode_t *currentmode)
 	// but rather render to memory bitmap buffer
 	lvid->direct = NULL;
 
-	if (!cv_stretch.value && (float)vid.width/vid.height != ((float)BASEVIDWIDTH/BASEVIDHEIGHT))
+	if (!cv_stretch.value && fabsf((float)vid.width/vid.height - ((float)BASEVIDWIDTH/BASEVIDHEIGHT)) > 1.0E-36f)
 		vid.height = (int)(vid.width * ((float)BASEVIDHEIGHT/BASEVIDWIDTH));// Adjust the height to match
 
 	return 1;