--- uae/src/drawing.c	2018/04/24 16:44:51	1.1.1.3
+++ uae/src/drawing.c	2018/04/24 16:46:14	1.1.1.4
@@ -707,8 +707,10 @@ static void pfield_init_linetoscr (void)
      * with sprites. */
     if (dip_for_drawing->nr_sprites == 0) {
 	int hiresadjust = bplhires ? 4 : 8;
-	ddf_left = ((dp_for_drawing->plfstrt + hiresadjust)*2 + mindelay - DISPLAY_LEFT_SHIFT) << lores_shift;
-	ddf_right = ((dp_for_drawing->plfstrt + dp_for_drawing->plflinelen + hiresadjust)*2 + maxdelay - DISPLAY_LEFT_SHIFT) << lores_shift;
+	ddf_left = (((dp_for_drawing->plfstrt + hiresadjust)*2
+		    + mindelay - DISPLAY_LEFT_SHIFT) << lores_shift);
+	ddf_right = (((dp_for_drawing->plfstrt + dp_for_drawing->plflinelen + hiresadjust)*2
+		      + maxdelay - DISPLAY_LEFT_SHIFT) << lores_shift);
 
 	if (linetoscr_diw_start < ddf_left)
 	    linetoscr_diw_start = ddf_left;