diff --git a/static/usage.html b/static/usage.html
index 58c7d94c..5dbf153e 100644
--- a/static/usage.html
+++ b/static/usage.html
@@ -107,6 +107,11 @@
             <p>The settings are available in the Settings app in System ➔ Advanced ➔ Update
             settings.</p>
 
+            <p>The "Check for updates" option will manually trigger an update check as soon as
+            possible. It will still wait for the configuration conditions listed below to be
+            satisfied, such as being connected to the internet via one of the permitted network
+            types.</p>
+
             <p>The "Release channel" setting can be changed from the default Stable channel to the
             Beta channel if you want to help with testing. The Beta channel will usually simply
             follow the Stable channel, but the Beta channel may be used to experiment with new