diff --git a/notebooks/DSSC/Characterize_DSSC_Darks_NBC.ipynb b/notebooks/DSSC/Characterize_DSSC_Darks_NBC.ipynb
index 791d65adc03835505190aab6dae8ad379a2c87fb..048af2e7d23db6e5245d902dcafbb97bbdd5f08f 100644
--- a/notebooks/DSSC/Characterize_DSSC_Darks_NBC.ipynb
+++ b/notebooks/DSSC/Characterize_DSSC_Darks_NBC.ipynb
@@ -239,7 +239,7 @@
     "\n",
     "    thresholds_offset_hard, thresholds_offset_sigma, thresholds_noise_hard, thresholds_noise_sigma = bp_thresh \n",
     "\n",
-    "    infile = h5py.File(filename, \"r\", driver=\"core\")\n",
+    "    infile = h5py.File(filename, \"r\")\n",
     "    if rawversion == 2:\n",
     "        count = np.squeeze(infile[f\"{h5path_idx}/count\"])\n",
     "        first = np.squeeze(infile[f\"{h5path_idx}/first\"])\n",