diff --git a/notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb b/notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb
index b90a78ed89c02977a660005112e699aac5d4cc47..356e75e8c3cb178838724491f697259d22c64add 100644
--- a/notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb
+++ b/notebooks/Jungfrau/Jungfrau_dark_analysis_all_gains_burst_mode_NBC.ipynb
@@ -309,7 +309,7 @@
     "                \" Not enough data to process darks.\")\n",
     "\n",
     "        images = np.transpose(\n",
-    "            instr_dc[instrument_src, \"data.adc\"].ndarray().astype(np.float64), (3, 2, 1, 0))\n",
+    "            instr_dc[instrument_src, \"data.adc\"].ndarray(), (3, 2, 1, 0))\n",
     "        acelltable = np.transpose(instr_dc[instrument_src, \"data.memoryCell\"].ndarray())\n",
     "        gain_vals = np.transpose(\n",
     "            instr_dc[instrument_src, \"data.gain\"].ndarray(), (3, 2, 1, 0))\n",