diff --git a/notebooks/worldcereal_v1_demo_custom_cropland.ipynb b/notebooks/worldcereal_v1_demo_custom_cropland.ipynb
index 34353dfb..55f98fab 100644
--- a/notebooks/worldcereal_v1_demo_custom_cropland.ipynb
+++ b/notebooks/worldcereal_v1_demo_custom_cropland.ipynb
@@ -321,7 +321,7 @@
     "    processing_period,\n",
     "    output_dir=output_dir,\n",
     "    cropland_parameters=parameters,\n",
-    "    postprocess_parameters=PostprocessParameters,\n",
+    "    postprocess_parameters=PostprocessParameters(),\n",
     ")"
    ]
   },
diff --git a/notebooks/worldcereal_v1_demo_custom_croptype.ipynb b/notebooks/worldcereal_v1_demo_custom_croptype.ipynb
index 411f8f4c..14f2b6f8 100644
--- a/notebooks/worldcereal_v1_demo_custom_croptype.ipynb
+++ b/notebooks/worldcereal_v1_demo_custom_croptype.ipynb
@@ -321,7 +321,7 @@
     "    output_dir=output_dir,\n",
     "    product_type=WorldCerealProductType.CROPTYPE,\n",
     "    croptype_parameters=parameters,\n",
-    "    postprocess_parameters=PostprocessParameters,\n",
+    "    postprocess_parameters=PostprocessParameters(),\n",
     ")"
    ]
   },
diff --git a/notebooks/worldcereal_v1_demo_default_cropland.ipynb b/notebooks/worldcereal_v1_demo_default_cropland.ipynb
index 259b9ff0..569e0ba3 100644
--- a/notebooks/worldcereal_v1_demo_default_cropland.ipynb
+++ b/notebooks/worldcereal_v1_demo_default_cropland.ipynb
@@ -188,7 +188,7 @@
     "    processing_extent,\n",
     "    processing_period,\n",
     "    output_dir=output_dir,\n",
-    "    postprocess_parameters=PostprocessParameters,\n",
+    "    postprocess_parameters=PostprocessParameters(),\n",
     ")"
    ]
   },