diff --git a/NEWS b/NEWS
index 1835edf3d95..a2609ab3655 100644
--- a/NEWS
+++ b/NEWS
@@ -57,6 +57,9 @@ PHP                                                                        NEWS
   . Add missing filter cleanups on phar failure. (nielsdos)
   . Fixed bug GH-18642 (Signed integer overflow in ext/phar fseek). (nielsdos)
 
+- PHPDBG:
+  . Fix 'phpdbg --help' segfault on shutdown with USE_ZEND_ALLOC=0. (nielsdos)
+
 - PGSQL:
   . Fix warning not being emitted when failure to cancel a query with
     pg_cancel_query(). (Girgias)
diff --git a/sapi/phpdbg/phpdbg.c b/sapi/phpdbg/phpdbg.c
index c4b3aa4cb37..49a3d00ffb2 100644
--- a/sapi/phpdbg/phpdbg.c
+++ b/sapi/phpdbg/phpdbg.c
@@ -180,12 +180,6 @@ static PHP_MSHUTDOWN_FUNCTION(phpdbg) /* {{{ */
 		phpdbg_notice("Script ended normally");
 	}
 
-	/* hack to restore mm_heap->use_custom_heap in order to receive memory leak info */
-	if (use_mm_wrappers) {
-		/* ASSUMING that mm_heap->use_custom_heap is the first element of the struct ... */
-		*(int *) zend_mm_get_heap() = 0;
-	}
-
 	if (PHPDBG_G(buffer)) {
 		free(PHPDBG_G(buffer));
 		PHPDBG_G(buffer) = NULL;