diff --git a/msgpack.c b/msgpack.c
index fcda164..a3faf30 100644
--- a/msgpack.c
+++ b/msgpack.c
@@ -280,7 +280,7 @@ PHP_MSGPACK_API int php_msgpack_unserialize(zval *return_value, char *str, size_
         default:
             MSGPACK_WARNING("[msgpack] (%s) Unknown result", __FUNCTION__);
     }
-    zval_dtor(return_value);
+    zval_ptr_dtor_nogc(return_value);
     msgpack_unserialize_var_destroy(&mp.user.var_hash, 1);
     RETVAL_FALSE;
     return FAILURE;
diff --git a/msgpack_unpack.c b/msgpack_unpack.c
index 9b3cc3b..01286a7 100644
--- a/msgpack_unpack.c
+++ b/msgpack_unpack.c
@@ -329,7 +329,7 @@ static zend_class_entry* msgpack_unserialize_class(zval **container, zend_string
                 }
             }
             ZEND_HASH_FOREACH_END();
-            zval_dtor(&container_tmp);
+            zval_ptr_dtor_nogc(&container_tmp);
         }
 
     }