diff --git a/notebooks/Timepix/Compute_Timepix_Event_Centroids.ipynb b/notebooks/Timepix/Compute_Timepix_Event_Centroids.ipynb
index 6fba05e2cdd8f111866a32f34cc359bb7bbaf5a8..2f8261efff19ddcdf468938fbc35f5b0af6b52d9 100755
--- a/notebooks/Timepix/Compute_Timepix_Event_Centroids.ipynb
+++ b/notebooks/Timepix/Compute_Timepix_Event_Centroids.ipynb
@@ -25,6 +25,11 @@
     "out_folder = '/gpfs/exfel/exp/SQS/202230/p900256/scratch/cal_test'  # required\n",
     "proposal = ''  # Proposal, leave empty for auto detection based on in_folder\n",
     "\n",
+    "# These parameters are required by xfel-calibrate but ignored in this notebook.\n",
+    "cal_db_timeout = 0  # Calibration DB timeout, currently not used.\n",
+    "cal_db_interface = 'foo'  # Calibration DB interface, currently not used.\n",
+    "karabo_da = 'bar'  # Karabo data aggregator name, currently not used\n",
+    "\n",
     "karabo_id = 'SQS_AQS_CAM'\n",
     "in_fast_data = '{karabo_id}/CAM/TIMEPIX3:daqEventOutput'\n",
     "out_device_id = '{karabo_id}/CAL/TIMEPIX3'\n",