diff --git a/src/dispnew.c b/src/dispnew.c
index a0a37acb804..87ec83acdf3 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -5009,6 +5009,10 @@ update_frame_1 (struct frame *f, bool force_p, bool inhibit_id_p,
 	    }
 	  while (row > top && col == 0);
 
+	  /* We exit the loop with COL at the glyph _after_ the last one.  */
+	  if (col > 0)
+	    col--;
+
 	  /* Make sure COL is not out of range.  */
 	  if (col >= FRAME_CURSOR_X_LIMIT (f))
 	    {