diff --git a/notebooks/DynamicFF/Characterize_DynamicFF_NBC.ipynb b/notebooks/DynamicFF/Characterize_DynamicFF_NBC.ipynb
index 9ceb9f6b6c26f3278093bc85207ebc91f066e4e3..a02735dc612c3b5d8bb2a5d48e92d968a3744734 100644
--- a/notebooks/DynamicFF/Characterize_DynamicFF_NBC.ipynb
+++ b/notebooks/DynamicFF/Characterize_DynamicFF_NBC.ipynb
@@ -217,8 +217,8 @@
     "    dark_conditions = constants[meta[\"db_module\"]][\"Offset\"][\"conditions\"]\n",
     "\n",
     "    if conditions != dark_conditions:\n",
-    "        ValueError(\"The conditions for flat-field run does not match \"\n",
-    "                   \"the dark run conditions. Skip flat-field characterization.\")\n",
+    "        raise ValueError(f\"The conditions for flat-field run {conditions}) do not match \"\n",
+    "                         f\"the dark run conditions ({dark_conditions}). Skip flat-field characterization.\")\n",
     "\n",
     "    key_data = flat_dc[source_name][image_key]\n",
     "    images_flat = key_data.ndarray()\n",