diff --git a/endpoints/web.py b/endpoints/web.py
index 110e145a2..34300bce7 100644
--- a/endpoints/web.py
+++ b/endpoints/web.py
@@ -229,7 +229,7 @@ def endtoend_health():
 
 
 @web.route('/health/dbrevision', methods=['GET'])
-@route_show_if(features.BILLING)
+@route_show_if(features.BILLING) # Since this is only used in production.
 @no_cache
 def dbrevision_health():
   # Find the revision from the database.