No need to redraw cursorline when 'modifiable' is changed. (Dominique Pelle)
diff --git a/src/option.c b/src/option.c
index 06e569c..fc38453 100644
--- a/src/option.c
+++ b/src/option.c
@@ -7516,21 +7516,12 @@
     }
 #endif
 
-#if defined(FEAT_TITLE) || defined(FEAT_CONCEAL)
-    /* when 'modifiable' is changed, redraw the window title and
-     * update current line for concealable items */
+#ifdef FEAT_TITLE
+    /* when 'modifiable' is changed, redraw the window title */
     else if ((int *)varp == &curbuf->b_p_ma)
     {
-# ifdef FEAT_TITLE
 	redraw_titles();
-# endif
-# ifdef FEAT_CONCEAL
-	if (curwin->w_p_cole > 0)
-	    update_single_line(curwin, curwin->w_cursor.lnum);
-# endif
     }
-#endif
-#ifdef FEAT_TITLE
     /* when 'endofline' is changed, redraw the window title */
     else if ((int *)varp == &curbuf->b_p_eol)
     {