diff --git a/dicogis/export/base_serializer.py b/dicogis/export/base_serializer.py
index 241b2fb2..27aa977b 100644
--- a/dicogis/export/base_serializer.py
+++ b/dicogis/export/base_serializer.py
@@ -12,7 +12,6 @@
 from pathlib import Path
 
 # project
-from dicogis import export
 from dicogis.constants import OutputFormats
 from dicogis.utils.texts import TextsManager
 
@@ -71,10 +70,7 @@ def get_serializer_from_parameters(
         opt_raw_path: bool = False,
         opt_prettify_size: bool = True,
         localized_strings: dict | None = None,
-    ) -> (
-        export.to_json.MetadatasetSerializerJson
-        | export.to_xlsx.MetadatasetSerializerXlsx
-    ):
+    ) -> MetadatasetSerializerBase:
         """Initiate the adequat serializer depending on parameters.
 
         Args:
@@ -88,7 +84,10 @@ def get_serializer_from_parameters(
         Returns:
             serializer already initialized
         """
-        print("ho", type(format_or_serializer))
+        # import only now to avoid circular imports
+        from dicogis.export.to_json import MetadatasetSerializerJson
+        from dicogis.export.to_xlsx import MetadatasetSerializerXlsx
+
         if isinstance(format_or_serializer, MetadatasetSerializerBase):
             return format_or_serializer
 
@@ -97,20 +96,20 @@ def get_serializer_from_parameters(
 
         if format_or_serializer == OutputFormats.excel:
             # creating the Excel workbook
-            output_serializer = export.to_xlsx.MetadatasetSerializerXlsx(
+            output_serializer = MetadatasetSerializerXlsx(
                 localized_strings=localized_strings,
                 opt_raw_path=opt_raw_path,
                 opt_size_prettify=opt_prettify_size,
                 output_path=output_path,
             )
         elif format_or_serializer == OutputFormats.json:
-            output_serializer = export.to_json.MetadatasetSerializerJson(
+            output_serializer = MetadatasetSerializerJson(
                 localized_strings=localized_strings,
                 opt_size_prettify=opt_prettify_size,
                 output_path=output_path,
             )
         elif format_or_serializer == OutputFormats.udata:
-            output_serializer = export.to_json.MetadatasetSerializerJson(
+            output_serializer = MetadatasetSerializerJson(
                 flavor="udata",
                 localized_strings=localized_strings,
                 opt_size_prettify=opt_prettify_size,