diff --git a/src/infra_version.js b/src/infra_version.js
index 7228e7f0e..57c32106e 100644
--- a/src/infra_version.js
+++ b/src/infra_version.js
@@ -5,7 +5,7 @@
 // Do not require anything here!
 
 exports = module.exports = {
-    // a major version makes all apps restore from backup
+    // a major version makes all apps restore from backup. #451 must be fixed before we do this.
     // a minor version makes all apps re-configure themselves
     'version': '48.6.0',