diff --git a/NEWS b/NEWS
index 25fd34bd7c3..1d708ab4873 100644
--- a/NEWS
+++ b/NEWS
@@ -13,6 +13,10 @@ PHP                                                                        NEWS
   . Fixed bug #79084 (mysqlnd may fetch wrong column indexes with MYSQLI_BOTH).
     (cmb)
 
+- Reflection:
+  . Fixed bug #79115 (ReflectionClass::isCloneable call reflected class
+    __destruct). (Nikita)
+
 23 Jan 2020, PHP 7.4.2
 
 - Core:
diff --git a/ext/reflection/php_reflection.c b/ext/reflection/php_reflection.c
index 386130a307d..5af48c4978c 100644
--- a/ext/reflection/php_reflection.c
+++ b/ext/reflection/php_reflection.c
@@ -4528,6 +4528,8 @@ ZEND_METHOD(reflection_class, isCloneable)
 			if (UNEXPECTED(object_init_ex(&obj, ce) != SUCCESS)) {
 				return;
 			}
+			/* We're not calling the constructor, so don't call the destructor either. */
+			zend_object_store_ctor_failed(Z_OBJ(obj));
 			RETVAL_BOOL(Z_OBJ_HANDLER(obj, clone_obj) != NULL);
 			zval_ptr_dtor(&obj);
 		}
diff --git a/ext/reflection/tests/bug79115.phpt b/ext/reflection/tests/bug79115.phpt
new file mode 100644
index 00000000000..b8ba6f1d7ff
--- /dev/null
+++ b/ext/reflection/tests/bug79115.phpt
@@ -0,0 +1,16 @@
+--TEST--
+Bug #79115: ReflectionClass::isCloneable call reflected class __destruct
+--FILE--
+<?php
+
+class A {
+    function __construct() { echo __FUNCTION__ . "\n"; }
+    function __destruct() { echo __FUNCTION__ . "\n"; }
+}
+
+$c = new ReflectionClass('A');
+var_dump($c->isCloneable());
+
+?>
+--EXPECT--
+bool(true)