diff --git a/.circleci/config.yml b/.circleci/config.yml
index 9ff12d9d6..e06163d01 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -29,6 +29,8 @@ workflows:
       - "lint"
       - "deprecations"
       - "c-locale"
+      # Any locale other than C or UTF-8.
+      - "another-locale"
 
       - "integration":
           requires:
@@ -196,6 +198,15 @@ jobs:
       LANG: "C"
 
 
+  another-locale:
+    <<: *DEBIAN
+
+    environment:
+      <<: *UTF_8_ENVIRONMENT
+      # aka "Latin 1"
+      LANG: "en_US.ISO-8859-1"
+
+
   deprecations:
     <<: *DEBIAN
 
diff --git a/newsfragments/3007.minor b/newsfragments/3007.minor
new file mode 100644
index 000000000..e69de29bb
diff --git a/src/allmydata/util/fake_inotify.py b/src/allmydata/util/fake_inotify.py
index 45d360105..284711c52 100644
--- a/src/allmydata/util/fake_inotify.py
+++ b/src/allmydata/util/fake_inotify.py
@@ -91,7 +91,7 @@ class INotify(object):
         self.callbacks = callbacks
 
     def event(self, filepath, mask):
-        with start_action(action_type=u"fake-inotify:event", path=filepath.path, mask=mask):
+        with start_action(action_type=u"fake-inotify:event", path=filepath.asTextMode().path, mask=mask):
             for cb in self.callbacks:
                 cb(None, filepath, mask)