diff --git a/modules/adfs/lib/IdP/ADFS.php b/modules/adfs/lib/IdP/ADFS.php
index c4388baf4dacf1da4c3eb3c9208e58324fa38b29..d53f02de3f612fd7cff6c13f81352c8c9ac0cdc4 100644
--- a/modules/adfs/lib/IdP/ADFS.php
+++ b/modules/adfs/lib/IdP/ADFS.php
@@ -139,7 +139,7 @@ MSG;
$post = <<<MSG
<body onload="document.forms[0].submit()">
- <form method="post" action="$url" enctype="multipart/form-data">
+ <form method="post" action="$url">
<input type="hidden" name="wa" value="wsignin1.0">
<input type="hidden" name="wresult" value="$wresult">
<input type="hidden" name="wctx" value="$wctx">