diff --git a/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb b/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
index 2bd52013ec6a1cd7a7acb855c444dca9990b5e3b..ee4a1ec27f067ee10d64be65b29a2fa8598ef45c 100644
--- a/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
+++ b/notebooks/AGIPD/Characterize_AGIPD_Gain_Darks_NBC.ipynb
@@ -268,6 +268,7 @@
     "    image_src=instrument_src_mod,\n",
     "    ctrl_src=ctrl_src,\n",
     ")\n",
+    "agipd_ctrl_dark.sort_dark_runs()\n",
     "if mem_cells == 0:\n",
     "    mem_cells = agipd_ctrl_dark.get_memory_cells()\n",
     "\n",
@@ -278,7 +279,6 @@
     "    bias_voltage = agipd_ctrl_dark.get_bias_voltage(karabo_id_control)\n",
     "\n",
     "fixed_gain_mode = False\n",
-    "agipd_ctrl_dark.validate_gain_modes()\n",
     "if gain_mode == -1:\n",
     "    gain_mode = agipd_ctrl_dark.gain_modes\n",
     "    fixed_gain_mode = agipd_ctrl_dark.fixed_gain_mode()\n",