diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f8f902..b114b79 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -34,10 +34,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - `fiboa validate`:
   - Is more robust against invalid collections and doesn't abort if not needed
   - Check NULL values correctly in case of arrays
+  - Throw an error if no files were provided
 - `fiboa create-geojson`:
   - Handles GeoParquet bbox correctly
   - Converts numpy arrays
   - Doesn't export empty collections
+- Fix recursive import
 
 ## [v0.3.10] - 2024-05-06
 
diff --git a/fiboa_cli/__init__.py b/fiboa_cli/__init__.py
index 5e5a08e..1f67f86 100644
--- a/fiboa_cli/__init__.py
+++ b/fiboa_cli/__init__.py
@@ -119,6 +119,11 @@ def validate(files, schema, ext_schema, fiboa_version, collection, data, timer):
         "collection": collection,
         "data": data,
     }
+
+    if len(files) == 0:
+        log("No files to validate", "error")
+        sys.exit(1)
+
     exit = 0
     for file in files:
         log(f"Validating {file}", "info")
diff --git a/fiboa_cli/convert.py b/fiboa_cli/convert.py
index 3ad6f58..d648ec1 100644
--- a/fiboa_cli/convert.py
+++ b/fiboa_cli/convert.py
@@ -1,10 +1,11 @@
 import importlib
 import os
-from . import datasets
+
+IGNORED_DATASET_FILES = ["__init__.py", "template.py"]
 
 def convert(dataset, output_file, cache_file = None, source_coop_url = None, collection = False, compression = None):
-    if dataset == "template":
-        raise Exception(f"Converter for dataset 'template' not available")
+    if dataset in IGNORED_DATASET_FILES:
+        raise Exception(f"'{dataset}' is not a converter")
     try:
         converter = read_converter(dataset)
     except ImportError as e:
@@ -13,9 +14,9 @@ def convert(dataset, output_file, cache_file = None, source_coop_url = None, col
     converter.convert(output_file, cache_file = cache_file, source_coop_url = source_coop_url, collection = collection, compression = compression)
 
 def list_all_converter_ids():
+    datasets = importlib.import_module(".datasets", package="fiboa_cli")
     files = os.listdir(datasets.__path__[0])
-    ignore = ["__init__.py", "template.py"]
-    return [f[:-3] for f in files if f.endswith(".py") and f not in ignore]
+    return [f[:-3] for f in files if f.endswith(".py") and f not in IGNORED_DATASET_FILES]
 
 def list_all_converters(keys):
     converters = {}
diff --git a/fiboa_cli/datasets/__init__.py b/fiboa_cli/datasets/__init__.py
new file mode 100644
index 0000000..e69de29