diff --git a/src/_zkapauthorizer/controller.py b/src/_zkapauthorizer/controller.py
index 96d70747cc45f31cebd2c67cc3bcd821c3977e54..b6031abf50c72410857a35472d84e976e16c8f8d 100644
--- a/src/_zkapauthorizer/controller.py
+++ b/src/_zkapauthorizer/controller.py
@@ -102,7 +102,7 @@ from .model import (
     Error as model_Error,
 )
 
-RETRY_INTERVAL = timedelta(milliseconds=1)
+RETRY_INTERVAL = timedelta(milliseconds=1000)
 
 @attr.s
 class UnexpectedResponse(Exception):