diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index d97381926d..6f9a4dab8a 100644
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -671,13 +671,13 @@ def _finalize_manager(process, address, authkey, state, _Client):
             except Exception:
                 pass
 
-            process.join(timeout=1.0)
+            process.join(timeout=1e-3)
             if process.is_alive():
                 util.info('manager still alive')
                 if hasattr(process, 'terminate'):
                     util.info('trying to `terminate()` manager process')
                     process.terminate()
-                    process.join(timeout=0.1)
+                    process.join(timeout=1e-6)
                     if process.is_alive():
                         util.info('manager still alive after terminate')