diff --git a/src/factorzen/core/progress.py b/src/factorzen/core/progress.py
index 0593ebd..ee6d927 100644
--- a/src/factorzen/core/progress.py
+++ b/src/factorzen/core/progress.py
@@ -16,7 +16,7 @@ def __init__(self, total: int, *, label: str = "Overall") -> None:
         self._enabled = sys.stderr.isatty()
         self._closed = False
 
-    def start(self) -> "OverallProgress":
+    def start(self) -> OverallProgress:
         if self._enabled:
             register(self.close)
             self._render("starting")