diff --git a/main/manager.c b/main/manager.c
index 5fb884460d..05819ae45b 100644
--- a/main/manager.c
+++ b/main/manager.c
@@ -156,7 +156,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 		</synopsis>
 		<syntax>
 			<xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
-			<parameter name="AuthType" required="True">
+			<parameter name="AuthType" required="true">
 				<para>Digest algorithm to use in the challenge. Valid values are:</para>
 				<enumlist>
 					<enum name="MD5" />