diff --git a/python/src/mcp_server/modules/rag_module.py b/python/src/mcp_server/modules/rag_module.py
index ac1715b8..67b5b498 100644
--- a/python/src/mcp_server/modules/rag_module.py
+++ b/python/src/mcp_server/modules/rag_module.py
@@ -85,7 +85,7 @@ def register_rag_tools(mcp: FastMCP):
 
         Args:
             query: Search query
-            source_domain: Optional domain filter (e.g., 'docs.anthropic.com'). 
+            source_domain: Optional domain filter (e.g., 'docs.anthropic.com').
                           Note: This is a domain name, not the source_id from get_available_sources.
             match_count: Max results (default: 5)