diff --git a/litellm/proxy/_experimental/mcp_server/server.py b/litellm/proxy/_experimental/mcp_server/server.py
index 873a61a0127..bf2e1298091 100644
--- a/litellm/proxy/_experimental/mcp_server/server.py
+++ b/litellm/proxy/_experimental/mcp_server/server.py
@@ -3194,13 +3194,8 @@ if MCP_AVAILABLE:
                             time.monotonic()
                         )
 
-                    # Defensive cleanup: if the session has no auth-context
-                    # tracking and no in-flight requests, the per-session lock
-                    # would otherwise be orphaned (the periodic cleanup loop
-                    # iterates ``_stateful_session_auth_context_last_seen`` and
-                    # would never see it). This guards against narrow paths
-                    # where a lock is created for a session_id that never
-                    # entered ``_stateful_session_auth_contexts``.
+                    # Periodic cleanup iterates _stateful_session_auth_context_last_seen,
+                    # so locks for untracked sessions must be dropped here.
                     if (
                         active_request_count <= 0
                         and session_id not in _stateful_session_auth_contexts