diff --git a/ext/mysqli/mysqli.c b/ext/mysqli/mysqli.c
index 1731bb70f46..d14b6168273 100644
--- a/ext/mysqli/mysqli.c
+++ b/ext/mysqli/mysqli.c
@@ -1271,7 +1271,7 @@ void php_mysqli_fetch_into_hash(INTERNAL_FUNCTION_PARAMETERS, int override_flags
 
 	php_mysqli_fetch_into_hash_aux(return_value, result, fetchtype TSRMLS_CC);
 
-	if (into_object && Z_TYPE_P(return_value) != IS_NULL) {
+	if (into_object && Z_TYPE_P(return_value) == IS_ARRAY) {
 		zval dataset = *return_value;
 		zend_fcall_info fci;
 		zend_fcall_info_cache fcc;
diff --git a/ext/mysqli/tests/bug64726.phpt b/ext/mysqli/tests/bug64726.phpt
new file mode 100644
index 00000000000..1f9bbaa93ec
--- /dev/null
+++ b/ext/mysqli/tests/bug64726.phpt
@@ -0,0 +1,23 @@
+--TEST--
+Bug #63398 (Segfault when calling fetch_object on a use_result and DB pointer has closed)
+--SKIPIF--
+<?php
+require_once('skipif.inc');
+require_once("connect.inc");
+if (!$IS_MYSQLND) {
+    die("skip mysqlnd only test");
+}
+require_once('skipifconnectfailure.inc');
+?>
+--FILE--
+<?php
+require 'connect.inc';
+$db = new my_mysqli($host, $user, $passwd, $db, $port, $socket);
+
+$result = $db->query('SELECT 1', MYSQLI_USE_RESULT);
+$db->close();
+var_dump($result->fetch_array());
+?>
+--EXPECTF--
+Warning: mysqli_result::fetch_array(): Error while reading a row in %sbug64726.php on line %d
+bool(false)
diff --git a/ext/mysqlnd/mysqlnd_result.c b/ext/mysqlnd/mysqlnd_result.c
index 7ab7d001619..b4725feb2b7 100644
--- a/ext/mysqlnd/mysqlnd_result.c
+++ b/ext/mysqlnd/mysqlnd_result.c
@@ -1479,6 +1479,7 @@ MYSQLND_METHOD(mysqlnd_res, fetch_into)(MYSQLND_RES * result, unsigned int flags
 	mysqlnd_array_init(return_value, mysqlnd_num_fields(result) * 2);
 	if (FAIL == result->m.fetch_row(result, (void *)return_value, flags, &fetched_anything TSRMLS_CC)) {
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error while reading a row");
+		zval_dtor(return_value);
 		RETVAL_FALSE;
 	} else if (fetched_anything == FALSE) {
 		zval_dtor(return_value);