diff --git a/.circleci/config.yml b/.circleci/config.yml
index 61ed12a5d..d0f596fc7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -207,7 +207,6 @@ jobs:
     environment:
       <<: *UTF_8_ENVIRONMENT
       TAHOE_LAFS_TOX_ENVIRONMENT: "pypy27-coverage"
-      ALLOWED_FAILURE: "yes"
 
 
   c-locale: