diff --git a/notebooks/DynamicFF/Correct_DynamicFF_NBC.ipynb b/notebooks/DynamicFF/Correct_DynamicFF_NBC.ipynb
index 3e6a1875c027ef1796d7f5687588becf8539fdf1..e064b291555932c914ea4fa01b5b8c6105cb1df7 100644
--- a/notebooks/DynamicFF/Correct_DynamicFF_NBC.ipynb
+++ b/notebooks/DynamicFF/Correct_DynamicFF_NBC.ipynb
@@ -234,7 +234,7 @@
     "\n",
     "            corrected_source = modules[da][\"corrected_source_name\"]\n",
     "            src = f.create_instrument_source(corrected_source)\n",
-    "            src.create_index(index_group=count)\n",
+    "            src.create_index(**{index_group: count})\n",
     "\n",
     "            # create key for images\n",
     "            ds_data = src.create_key(image_key, shape=shape, dtype=np.float32)\n",