diff --git a/emf/loadflow_tool/merge.py b/emf/loadflow_tool/merge.py
index e5294b0..3de65e4 100644
--- a/emf/loadflow_tool/merge.py
+++ b/emf/loadflow_tool/merge.py
@@ -1,5 +1,5 @@
 import pypowsybl
-from helper import load_model, load_opdm_data, filename_from_metadata, attr_to_dict, export_model
+from emf.loadflow_tool.helper import load_model, load_opdm_data, filename_from_metadata, attr_to_dict, export_model
 from emf.loadflow_tool.model_validator.validator import validate_model
 import logging
 import json
@@ -285,4 +285,4 @@
     publication_responses.append(
         {"name": instance_file.name,
          "response": publication_response}
-    )
\ No newline at end of file
+    )