diff --git a/src/calng/CrystfelRunner.py b/src/calng/CrystfelRunner.py
index 9238fde5db0c8f106979c9d4d904297bef72953a..9c06e953c424a20c6da8421f234dabfa4a856f28 100644
--- a/src/calng/CrystfelRunner.py
+++ b/src/calng/CrystfelRunner.py
@@ -322,6 +322,7 @@ class CrystfelRunner(PythonDevice):
                     "--no-non-hits-in-stream",
                 ]
             )
+            .reconfigurable()
             .commit(),
 
             STRING_ELEMENT(expected)