diff --git a/src/copy.c b/src/copy.c
index a8000d1..0730a7a 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -650,6 +650,7 @@ static zend_always_inline zend_object* php_parallel_copy_sync_thread(zend_object
     GC_DEL_FLAGS(&dest->std, GC_IMMUTABLE);
 
     zend_object_std_init(&dest->std, dest->std.ce);
+    dest->std.handlers = source->handlers;
 
     dest->sync = php_parallel_sync_copy(object->sync);