--- ./src/debug.c.orig	2021-05-01 14:39:04.609215050 +0000
+++ ./src/debug.c	2021-05-01 14:39:20.555895312 +0000
@@ -1706,7 +1706,7 @@
 
 static void killMainThread(void) {
     int err;
-    if (pthread_self() != server.main_thread_id && pthread_cancel(server.main_thread_id) == 0) {
+    if (pthread_self() != server.main_thread_id && pthread_kill(server.main_thread_id, 0) == 0) {
         if ((err = pthread_join(server.main_thread_id,NULL)) != 0) {
             serverLog(LL_WARNING, "main thread can not be joined: %s", strerror(err));
         } else {