diff --git a/tools/trace/timer.py b/tools/trace/timer.py
index a4953dc..50ad710 100644
--- a/tools/trace/timer.py
+++ b/tools/trace/timer.py
@@ -43,10 +43,10 @@ def __enter__(self) -> None:
 
     def __exit__(self, *exc: object) -> None:
         """Run when exit ContextManager or Decoraotr."""
-        from tools import Logger
-
         self.end = time.time()
 
+        from tools import Logger
+
         logger = Logger(self.name)
         logger.debug("executed in %f ms", self._duration * 1_000)