diff --git a/manual/manual.md b/manual/manual.md
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@@ -292,11 +292,11 @@ Devops are permitted to perform some routine administration functions, such as m
 ## Emergencies
 The fediverse is typically calmer than the centralized social networks, but there can be times when disputes break out and tempers become heated. In the worst cases this can lead to administrator burnout and instances shutting down.
 
-If you are the administrator and you are in a situation where you or the users on your instance are getting a lot of targeted harassement then you can put the instance into *broch mode*, which is a type of temporary allowlist which last for between one and two weeks. This prevents previously unknown instances from sending posts to your timelines, so adversaries can't create a lot of temporary instances for the purpose of attacking yours.
+If you are the administrator and you are in a situation where you or the users on your instance are getting a lot of targeted harassement then you can put the instance into *broch mode*, which is a type of temporary allowlist which lasts for between one and two weeks. This prevents previously unknown instances from sending posts to your timelines, so adversaries can't create a lot of temporary instances for the purpose of attacking yours.
 
 A general observation is that it is difficult to maintain collective outrage at a high level for more than a week, so trolling campaigns tend to not last much longer than that. Broch mode allows you to ride out the storm.
 
-To enable broch mode the administrator should edit their profile, go to the instance settings and select the option. Once enabled it will turn itself off automatically after 7-14 days.
+To enable broch mode the administrator should edit their profile, go to the instance settings and select the option. Once enabled it will turn itself off automatically after 7-14 days. The somewhat uncertain deactivation time prevents an adversary from knowing when to begin a new flooding attempt, and after a couple of weeks they will be losing the motivation to continue.
 # Themes
 ## Standard themes
 ## Theme customization