diff --git a/notebooks/REMI/REMI_Digitize_and_Transform.ipynb b/notebooks/REMI/REMI_Digitize_and_Transform.ipynb
index fc1ac99babe5143276436c865e383dc0b67237b4..f1653cf4e660c7202e1198b083d8072dce592553 100644
--- a/notebooks/REMI/REMI_Digitize_and_Transform.ipynb
+++ b/notebooks/REMI/REMI_Digitize_and_Transform.ipynb
@@ -420,6 +420,8 @@
     "    \n",
     "    # Overwrite global pulse statistics computed before,\n",
     "    num_pulses = len(dc.train_ids)\n",
+    "    triggers = np.empty(num_pulses, dtype=trigger_dt)\n",
+    "    \n",
     "    pulse_counts[:] = 1\n",
     "    pulse_counts = pulse_counts.astype(np.int32)\n",
     "    pulse_offsets = np.arange(len(pulse_counts)).astype(np.int32)\n",