diff --git a/admin/docs/en-us/setup/setup.html b/admin/docs/en-us/setup/setup.html
index c9db2589..41bbf329 100644
--- a/admin/docs/en-us/setup/setup.html
+++ b/admin/docs/en-us/setup/setup.html
@@ -70,6 +70,12 @@ <h2 id="sql-setup">
 		SQL Setup
 	</h2>
 
+	<p>
+		By default, HashOver stores comments in XML files. Where comments are stored
+		is configured using the <a href="../settings/#data-format"><code>data-format</code>
+		setting</a>. You must set this to <code>sql</code> for the below options to take effect.
+	</p>
+
 	<p>
 		The following settings are optional, but required if you plan to store
 		comments in a MySQL database or any other SQL server supported by