diff --git a/data_processor.py b/data_processor.py
index 18385351..990ff1eb 100644
--- a/data_processor.py
+++ b/data_processor.py
@@ -41,7 +41,6 @@ from helpers import (
     URL_CHECK_MARKER,
     evaluate_branche_chatgpt,
     get_numeric_filter_value,
-    summarize_batch_openai,
     initialize_target_schema,
     search_linkedin_contacts,
     is_valid_wikipedia_article_url,
@@ -1486,8 +1485,9 @@ class DataProcessor:
             aggregated_prompt += entry_text
 
         try:
-            # Using summarize helper, but it's just a call_openai_chat wrapper
-            chat_response = summarize_batch_openai(
+            # KORREKTUR: Direkter Aufruf des robusten Helpers 'call_openai_chat' aus helpers.py
+            from helpers import call_openai_chat
+            chat_response = call_openai_chat(
                 aggregated_prompt, temperature=0.0)
             if not chat_response:
                 raise APIError(