diff --git a/src/dispnew.c b/src/dispnew.c
index c0acc738c78..da5e9c6e398 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -4156,7 +4156,6 @@ update_window (w, force_p)
 	  update_window_line (w, MATRIX_ROW_VPOS (mode_line_row,
 						  desired_matrix),
 			      &mouse_face_overwritten_p);
-	  changed_p = 1;
 	}
 
       /* Find first enabled row.  Optimizations in redisplay_internal
@@ -4226,7 +4225,6 @@ update_window (w, force_p)
 	{
 	  header_line_row->y = 0;
 	  update_window_line (w, 0, &mouse_face_overwritten_p);
-	  changed_p = 1;
 	}
 
       /* Fix the appearance of overlapping/overlapped rows.  */