diff --git a/src/bootstrap/flags.rs b/src/bootstrap/flags.rs
index a8b76c44f79d..4b04ee84c31d 100644
--- a/src/bootstrap/flags.rs
+++ b/src/bootstrap/flags.rs
@@ -367,7 +367,7 @@ pub fn parse(args: &[String]) -> Flags {
         ./x.py test src/libstd --stage 0 --no-doc
         ./x.py test src/test/ui --bless
         ./x.py test src/test/ui --compare-mode nll
-    
+
     Note that `test src/test/* --stage N` does NOT depend on `build src/rustc --stage N`;
     just like `build src/libstd --stage N` it tests the compiler produced by the previous
     stage.