Index: branches/1.2.x/platform/elements/side_boxes/login.elm.tpl
===================================================================
diff -u -N -r14501 -r14593
--- branches/1.2.x/platform/elements/side_boxes/login.elm.tpl	(.../login.elm.tpl)	(revision 14501)
+++ branches/1.2.x/platform/elements/side_boxes/login.elm.tpl	(.../login.elm.tpl)	(revision 14593)
@@ -82,7 +82,9 @@
 <!-- IF NOT LOGGED IN! -->
 
 	<form method="post" action="<inp2:m_FormAction />">
-		<inp2:m_if check="u_UseUsernames">
+		<inp2:u.login-sidebox_FormName name="login"/>
+
+		<inp2:m_if check="u.login-sidebox_UseUsernames">
 			<inp2:m_phrase label="lu_username"/><br />
 		<inp2:m_else/>
 			<inp2:m_phrase label="lu_email"/><br />