diff -up ./top/top.c.ori ./top/top.c
--- ./top/top.c.ori	2019-08-08 17:07:57.970295504 +0200
+++ ./top/top.c	2019-08-08 17:09:02.705070742 +0200
@@ -406,6 +406,11 @@ static void at_eoj (void) {
          * The real program end */
 static void bye_bye (const char *str) NORETURN;
 static void bye_bye (const char *str) {
+   sigset_t ss;
+
+// POSIX.1-2004 async-signal-safe: sigfillset, sigprocmask
+   sigfillset(&ss);
+   sigprocmask(SIG_BLOCK, &ss, NULL);
    at_eoj();                 // restore tty in preparation for exit
 #ifdef ATEOJ_RPTSTD
 {  proc_t *p;
@@ -616,12 +621,6 @@ static void sig_abexit (int sig) {
          *    SIGUSR1 and SIGUSR2 */
 static void sig_endpgm (int dont_care_sig) NORETURN;
 static void sig_endpgm (int dont_care_sig) {
-   sigset_t ss;
-
-// POSIX.1-2004 async-signal-safe: sigfillset, sigprocmask
-   sigfillset(&ss);
-   sigprocmask(SIG_BLOCK, &ss, NULL);
-   Frames_signal = BREAK_sig;
    bye_bye(NULL);
    (void)dont_care_sig;
 } // end: sig_endpgm