diff --git a/src/v_video.c b/src/v_video.c
index b5281605f..470910bf5 100644
--- a/src/v_video.c
+++ b/src/v_video.c
@@ -402,7 +402,7 @@ static void DrawPatchInternal(int x, int y, patch_t *patch, boolean flipped)
     }
     else // too far off-screen
     {
-        x1 = (x1 * video.xscale) >> FRACBITS;
+        x1 = -(DIV_ROUND_FLOOR(video.width * (-x1 - 1), video.unscaledw));
     }
 
     if (x2 < video.unscaledw)