diff --git a/server/main.go b/server/main.go
index cf81973fd2b40288d25f2bc47faa6d6ff987b63d..5b2d27bdef19ef920369a668ce03edfaed28ac37 100644
--- a/server/main.go
+++ b/server/main.go
@@ -201,6 +201,7 @@ var globals struct {
 	wsCompression bool
 
 	// URL of the main endpoint.
+	// TODO: implement file-serving API for gRPC and remove this feature.
 	servingAt string
 }