1 files changed, 1 insertions, 1 deletions

diff --git a/subcmds/start.py b/subcmds/start.py
index fd177f9e..56008f42 100644
--- a/subcmds/start.py
+++ b/subcmds/start.py
@@ -130,7 +130,7 @@ revision specified in the manifest.
             all_projects,
             callback=_ProcessResults,
             output=Progress(
-                "Starting %s" % (nb,), len(all_projects), quiet=opt.quiet
+                f"Starting {nb}", len(all_projects), quiet=opt.quiet
             ),
         )