diff --git a/modules/caddyhttp/fileserver/command.go b/modules/caddyhttp/fileserver/command.go
index 6a775097a..bc7f981d9 100644
--- a/modules/caddyhttp/fileserver/command.go
+++ b/modules/caddyhttp/fileserver/command.go
@@ -57,6 +57,7 @@ respond with a file listing.`,
 			fs.Bool("browse", false, "Enable directory browsing")
 			fs.Bool("templates", false, "Enable template rendering")
 			fs.Bool("access-log", false, "Enable the access log")
+			fs.Bool("debug", false, "Enable verbose debug logs")
 			return fs
 		}(),
 	})