diff --git a/doc/fixes34.3 b/doc/fixes34.3
index 13a7bedfe..6d54eec2e 100644
--- a/doc/fixes34.3
+++ b/doc/fixes34.3
@@ -81,6 +81,7 @@ when polymorphed into a quantum mechanic on a no teleport level and swallowed,
 allow Conflict-resistant monsters to respond to conflict attacks rather than
 	sitting there and taking the attacks until they die
 prefer herbivorous stone-to-flesh message when hero is a vegitarian
+try even harder to avoid incorrect map display while changing levels
 
 
 Platform- and/or Interface-Specific Fixes
diff --git a/src/display.c b/src/display.c
index 31012e3ac..3990cc6d9 100644
--- a/src/display.c
+++ b/src/display.c
@@ -1346,8 +1346,11 @@ flush_screen(cursor_on_u)
      *	    flush_screen->print_glyph->impossible->pline->flush_screen
      */
     static   boolean flushing = 0;
+    static   boolean delay_flushing = 0;
     register int x,y;
 
+    if (cursor_on_u == -1) delay_flushing = !delay_flushing;
+    if (delay_flushing) return;
     if (flushing) return;	/* if already flushing then return */
     flushing = 1;
 
diff --git a/src/do.c b/src/do.c
index 0031e62a5..80ea45811 100644
--- a/src/do.c
+++ b/src/do.c
@@ -1094,6 +1094,7 @@ boolean at_stairs, falling, portal;
 	/* do this prior to level-change pline messages */
 	vision_reset();		/* clear old level's line-of-sight */
 	vision_full_recalc = 0;	/* don't let that reenable vision yet */
+	flush_screen(-1);	/* ensure all map flushes are postponed */
 
 	if (portal && !In_endgame(&u.uz)) {
 	    /* find the portal on the new level */
@@ -1243,7 +1244,7 @@ boolean at_stairs, falling, portal;
 	/* Reset the screen. */
 	vision_reset();		/* reset the blockages */
 	docrt();		/* does a full vision recalc */
-	flush_screen(1);
+	flush_screen(-1);
 
 	/*
 	 *  Move all plines beyond the screen reset.