diff --git a/notebooks/FastCCD/Characterize_Darks_NewDAQ_FastCCD_NBC_New_Common_Mode.ipynb b/notebooks/FastCCD/Characterize_Darks_NewDAQ_FastCCD_NBC_New_Common_Mode.ipynb
index 5f2de33edf0b45d102cb657375f30015d3e8692e..0b56642e1a91ff2f68c87245995eac562c4677e6 100644
--- a/notebooks/FastCCD/Characterize_Darks_NewDAQ_FastCCD_NBC_New_Common_Mode.ipynb
+++ b/notebooks/FastCCD/Characterize_Darks_NewDAQ_FastCCD_NBC_New_Common_Mode.ipynb
@@ -420,7 +420,7 @@
     "# Common Mode Correction:\n",
     "# This is the new method subtracting the median of all pixels that are read out at the same time along a row:\n",
     "cmCorrection = xcal.CommonModeCorrection([data.shape[0], data.shape[1]], [data.shape[0]//2, data.shape[1]], \n",
-    "                                         commonModeAxis, parallel=False, dType=np.float32, stride=10,\n",
+    "                                         commonModeAxis, parallel=run_parallel, dType=np.float32, stride=10,\n",
     "                                         noiseMap=noiseMap.astype(np.float32), minFrac=0)\n",
     "\n",
     "cmCorrection.debug()"