diff --git a/notebooks/pnCCD/Characterize_pnCCD_Dark_NBC.ipynb b/notebooks/pnCCD/Characterize_pnCCD_Dark_NBC.ipynb
index 2f0106a80118c501045808931fb010aa240e75d5..9287f1fd196c629fa302cb434ff30e14690a79a1 100644
--- a/notebooks/pnCCD/Characterize_pnCCD_Dark_NBC.ipynb
+++ b/notebooks/pnCCD/Characterize_pnCCD_Dark_NBC.ipynb
@@ -44,7 +44,7 @@
     "number_dark_frames = 0  # number of images to be used, if set to 0 all available images are used\n",
     "chunkSize = 100 # number of images to read per chunk\n",
     "fix_temperature = 233.  # fix temperature in K, set to -1 to use value from slow data\n",
-    "gain = 0  # the detector's gain setting, only 0 is currently implemented\n",
+    "gain = 1  # the detector's gain setting, only 0 is currently implemented\n",
     "bias_voltage = 300  # detector's bias voltage\n",
     "integration_time = 70  # detector's integration time\n",
     "commonModeAxis = 'row' # axis along which common mode will be calculated (0: along rows, 1: along columns)\n",