diff --git a/geospaas_processing/converters/idf/converter.py b/geospaas_processing/converters/idf/converter.py
index 91cceee..3dcca6e 100644
--- a/geospaas_processing/converters/idf/converter.py
+++ b/geospaas_processing/converters/idf/converter.py
@@ -185,7 +185,7 @@ def list_files_to_convert(dataset_file_path):
             ]
         except (FileNotFoundError, NotADirectoryError) as error:
             raise ConversionError(
-                f"Could not find a measurement directory inside {dataset_file_path}") from error
+                f"Could not find a GRANULE directory inside {dataset_file_path}") from error
 
 
 @IDFConversionManager.register()