diff --git a/ncurses/base/lib_endwin.c b/ncurses/base/lib_endwin.c
index 9ebf769..85d2bdb 100644
--- a/ncurses/base/lib_endwin.c
+++ b/ncurses/base/lib_endwin.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998-2009,2014 Free Software Foundation, Inc.              *
+ * Copyright 2020,2023 Thomas E. Dickey                                     *
+ * Copyright 1998-2014,2017 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -42,7 +43,7 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_endwin.c,v 1.23 2014/03/08 20:32:59 tom Exp $")
+MODULE_ID("$Id: lib_endwin.c,v 1.28 2023/11/11 21:27:32 tom Exp $")
 
 NCURSES_EXPORT(int)
 NCURSES_SP_NAME(endwin) (NCURSES_SP_DCL0)
@@ -51,20 +52,24 @@
 
     T((T_CALLED("endwin(%p)"), (void *) SP_PARM));
 
-    if (SP_PARM) {
+    if (SP_PARM != NULL) {
+	if (SP_PARM->_endwin != ewSuspend) {
 #ifdef USE_TERM_DRIVER
-	TERMINAL_CONTROL_BLOCK *TCB = TCBOf(SP_PARM);
+	    TERMINAL_CONTROL_BLOCK *TCB = TCBOf(SP_PARM);
 
-	SP_PARM->_endwin = TRUE;
-	if (TCB && TCB->drv && TCB->drv->td_scexit)
-	    TCB->drv->td_scexit(SP_PARM);
+	    SP_PARM->_endwin = ewSuspend;
+	    if (TCB && TCB->drv && TCB->drv->td_scexit)
+		TCB->drv->td_scexit(SP_PARM);
 #else
-	SP_PARM->_endwin = TRUE;
-	SP_PARM->_mouse_wrap(SP_PARM);
-	_nc_screen_wrap();
-	_nc_mvcur_wrap();	/* wrap up cursor addressing */
+	    SP_PARM->_endwin = ewSuspend;
+	    SP_PARM->_mouse_wrap(SP_PARM);
+	    _nc_screen_wrap();
+	    _nc_mvcur_wrap();	/* wrap up cursor addressing */
 #endif
-	code = NCURSES_SP_NAME(reset_shell_mode) (NCURSES_SP_ARG);
+	    code = OK;
+	}
+	if (NCURSES_SP_NAME(reset_shell_mode) (NCURSES_SP_ARG) == ERR)
+	    code = ERR;
     }
 
     returnCode(code);