diff --git a/app/system/backend/sync_router.py b/app/system/backend/sync_router.py
index 095dd55..5c03941 100644
--- a/app/system/backend/sync_router.py
+++ b/app/system/backend/sync_router.py
@@ -202,6 +202,7 @@ async def sync_vtiger_contacts() -> Dict[str, Any]:
         updated_count = 0
         skipped_count = 0
         linked_count = 0
+        debug_counter = 0  # Track how many we've logged
         
         for contact in contacts:
             vtiger_contact_id = contact.get('id')
@@ -284,9 +285,10 @@ async def sync_vtiger_contacts() -> Dict[str, Any]:
             # Link contact to customer if account_id exists
             account_id = contact.get('account_id')
             
-            # Debug: Log first 10 contacts with account_id info
-            if len(contacts) < 20:  # Only log for small batches or first few
-                logger.info(f"🔍 Debug kontakt: {first_name} {last_name}, account_id={account_id}, contact_id={contact_id if 'contact_id' in locals() else 'N/A'}")
+            # Debug: Log first 20 contacts with account_id info
+            if debug_counter < 20:
+                logger.info(f"🔍 Debug kontakt #{debug_counter+1}: {first_name} {last_name}, account_id='{account_id}', contact_id={contact_id if 'contact_id' in locals() else 'N/A'}")
+                debug_counter += 1
             
             if account_id and contact_id:
                 # Find customer by vTiger account ID