diff --git a/src/vim.h b/src/vim.h
index fe1e982..4d409d4 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -624,15 +624,21 @@
 // Values for w_popup_flags.
 #define POPF_IS_POPUP	0x01	// this is a popup window
 #define POPF_HIDDEN	0x02	// popup is not displayed
-#define POPF_HANDLED	0x04	// popup was just redrawn or filtered
-#define POPF_CURSORLINE	0x08	// popup is highlighting at the cursorline
-#define POPF_ON_CMDLINE	0x10	// popup overlaps command line
-#define POPF_DRAG	0x20	// popup can be moved by dragging
-#define POPF_RESIZE	0x40	// popup can be resized by dragging
-#define POPF_MAPPING	0x80	// mapping keys
-#define POPF_INFO	0x100	// used for info of popup menu
-#define POPF_INFO_MENU	0x200	// align info popup with popup menu
-#define POPF_POSINVERT	0x400	// vertical position can be inverted
+#define POPF_CURSORLINE	0x04	// popup is highlighting at the cursorline
+#define POPF_ON_CMDLINE	0x08	// popup overlaps command line
+#define POPF_DRAG	0x10	// popup can be moved by dragging
+#define POPF_RESIZE	0x20	// popup can be resized by dragging
+#define POPF_MAPPING	0x40	// mapping keys
+#define POPF_INFO	0x80	// used for info of popup menu
+#define POPF_INFO_MENU	0x100	// align info popup with popup menu
+#define POPF_POSINVERT	0x200	// vertical position can be inverted
+
+// flags used in w_popup_handled
+#define POPUP_HANDLED_1	    0x01    // used by mouse_find_win()
+#define POPUP_HANDLED_2	    0x02    // used by popup_do_filter()
+#define POPUP_HANDLED_3	    0x04    // used by popup_check_cursor_pos()
+#define POPUP_HANDLED_4	    0x08    // used by may_update_popup_mask()
+#define POPUP_HANDLED_5	    0x10    // used by update_popups()
 
 #ifdef FEAT_TEXT_PROP
 # define WIN_IS_POPUP(wp) ((wp)->w_popup_flags != 0)