diff --git a/changes/bug22270 b/changes/bug22270
new file mode 100644
index 0000000000..913083883d
--- /dev/null
+++ b/changes/bug22270
@@ -0,0 +1,4 @@
+  o Minor bugfixes (fallback directory mirrors):
+    - Make the usage example in updateFallbackDirs.py actually work.
+      (And explain what it does.)
+      Fixes bug 22270 in 0.3.0.3-alpha.
diff --git a/scripts/maint/updateFallbackDirs.py b/scripts/maint/updateFallbackDirs.py
index 117ac5cccb..50a2bd620e 100755
--- a/scripts/maint/updateFallbackDirs.py
+++ b/scripts/maint/updateFallbackDirs.py
@@ -1,8 +1,13 @@
 #!/usr/bin/python
 
 # Usage:
+#
+# Regenerate the list:
 # scripts/maint/updateFallbackDirs.py > src/or/fallback_dirs.inc
-# scripts/maint/updateFallbackDirs.py check_existing > src/or/fallback_dirs.inc
+#
+# Check the existing list:
+# scripts/maint/updateFallbackDirs.py check_existing > fallback_dirs.inc.ok
+# mv fallback_dirs.inc.ok src/or/fallback_dirs.inc
 #
 # This script should be run from a stable, reliable network connection,
 # with no other network activity (and not over tor).