diff --git a/src/vim.h b/src/vim.h
index 57fbe36..3389ef5 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -604,14 +604,15 @@
  *     off		off		w_botline not valid
  *     on		off		not possible
  */
-#define VALID_WROW	0x01	/* w_wrow (window row) is valid */
-#define VALID_WCOL	0x02	/* w_wcol (window col) is valid */
-#define VALID_VIRTCOL	0x04	/* w_virtcol (file col) is valid */
-#define VALID_CHEIGHT	0x08	/* w_cline_height and w_cline_folded valid */
-#define VALID_CROW	0x10	/* w_cline_row is valid */
-#define VALID_BOTLINE	0x20	/* w_botine and w_empty_rows are valid */
-#define VALID_BOTLINE_AP 0x40	/* w_botine is approximated */
-#define VALID_TOPLINE	0x80	/* w_topline is valid (for cursor position) */
+#define VALID_WROW	0x01	// w_wrow (window row) is valid
+#define VALID_WCOL	0x02	// w_wcol (window col) is valid
+#define VALID_VIRTCOL	0x04	// w_virtcol (file col) is valid
+#define VALID_CHEIGHT	0x08	// w_cline_height and w_cline_folded valid
+#define VALID_CROW	0x10	// w_cline_row is valid
+#define VALID_BOTLINE	0x20	// w_botine and w_empty_rows are valid
+#define VALID_BOTLINE_AP 0x40	// w_botine is approximated
+#define VALID_TOPLINE	0x80	// w_topline is valid (for cursor position)
+#define VALID_POPUP	0x100	// popup has been redrawn
 
 /*
  * Terminal highlighting attribute bits.