diff --git a/notebooks/LPD/LPD_Correct_Fast.ipynb b/notebooks/LPD/LPD_Correct_Fast.ipynb
index 5406cab07513eb3581330db9b171d254f68f2923..4b8dfa4576a2ce551562609a818c18da4063ee6e 100644
--- a/notebooks/LPD/LPD_Correct_Fast.ipynb
+++ b/notebooks/LPD/LPD_Correct_Fast.ipynb
@@ -282,7 +282,8 @@
     "        resp = CalibrationConstantVersion.get_closest_by_time_by_detector_conditions(\n",
     "            client, karabo_id, list(calibrations.keys()),\n",
     "            {'parameters_conditions_attributes': condition},\n",
-    "            karabo_da='', event_at=creation_time.isoformat(), snapshot_at=None)\n",
+    "            karabo_da='', event_at=creation_time.isoformat()\n",
+    "        )\n",
     "\n",
     "        if not resp['success']:\n",
     "            raise RuntimeError(resp)\n",