diff --git a/backend/app/services/knowledge_base_service.py b/backend/app/services/knowledge_base_service.py
index c58d90a..bfcabaa 100644
--- a/backend/app/services/knowledge_base_service.py
+++ b/backend/app/services/knowledge_base_service.py
@@ -292,7 +292,7 @@ class KnowledgeBaseService:
                 prompt = prompt_template.format(combined_markdown=combined_markdown)
 
                 logger.info(f"[KB_SERVICE] Sending {len(combined_markdown)} chars to Gemini for distillation")
-                response = await self.gemini.client.aio.models.generate_content(
+                response = await self.gemini.primary_client.aio.models.generate_content(
                     model=self.gemini.model,
                     contents=prompt,
                 )