diff --git a/src/QRegex/Cursor.nqp b/src/QRegex/Cursor.nqp
index b4e70db24..04a515586 100644
--- a/src/QRegex/Cursor.nqp
+++ b/src/QRegex/Cursor.nqp
@@ -431,8 +431,10 @@ role NQPMatchRole is export {
             nqp::bindattr_i($new, $?CLASS, '$!from', $!from);
             nqp::bindattr_i($new, $?CLASS, '$!pos', $!pos);
             nqp::bindattr_i($new, $?CLASS, '$!to', -1);
-            nqp::bindattr($new, $?CLASS, '$!cstack', nqp::clone($!cstack)) if $!cstack;
-            nqp::bindattr($new, $?CLASS, '$!bstack', nqp::clone($!bstack));
+            nqp::bindattr($new, $?CLASS, '$!cstack', $!cstack);
+            nqp::bindattr($new, $?CLASS, '$!bstack', $!bstack);
+            nqp::bindattr(self, $?CLASS, '$!bstack', nqp::null());
+            nqp::bindattr(self, $?CLASS, '$!cstack', nqp::null());
             $new
         }
         else {