diff --git a/static/install.html b/static/install.html
index 8534ac21..9b3c294e 100644
--- a/static/install.html
+++ b/static/install.html
@@ -296,7 +296,10 @@ Installed as /home/username/platform-tools/fastboot</pre>
 
                 <pre>fastboot flashing unlock</pre>
 
-                <p>The command needs to be confirmed on the device and will wipe all data.</p>
+
+                <p>The command needs to be confirmed on the device and will wipe all data. Use one
+                of the volume buttons to switch the selection to accepting it and the power button
+                to confirm.</p>
             </section>
 
             <section id="obtaining-signify">
@@ -435,7 +438,9 @@ curl -O https://releases.grapheneos.org/sunfish-factory-2020.12.12.03.zip.sig</p
 
                 <pre>fastboot flashing lock</pre>
 
-                <p>The command needs to be confirmed on the device and will wipe all data.</p>
+                <p>The command needs to be confirmed on the device and will wipe all data. Use one
+                of the volume buttons to switch the selection to accepting it and the power button
+                to confirm.</p>
             </section>
 
             <section id="post-installation">
diff --git a/static/web-install.html b/static/web-install.html
index 1a761448..75ce8348 100644
--- a/static/web-install.html
+++ b/static/web-install.html
@@ -87,7 +87,9 @@
 
                 <button id="unlock-bootloader" disabled="disabled">Unlock bootloader</button>
 
-                <p>The command needs to be confirmed on the device and will wipe all data.</p>
+                <p>The command needs to be confirmed on the device and will wipe all data. Use one
+                of the volume keys to switch the selection to accepting it and the power button to
+                confirm.</p>
             </section>
         </main>
         <footer>