diff --git a/interface/web/mail/form/mail_user.tform.php b/interface/web/mail/form/mail_user.tform.php
index 3b5391868e32115d8cc316ac1e0c1f010ac618d5..83c8d74cbccf47813a03c55a819be96691958cbd 100644
--- a/interface/web/mail/form/mail_user.tform.php
+++ b/interface/web/mail/form/mail_user.tform.php
@@ -216,20 +216,29 @@ $form["tabs"]['mailuser'] = array(
 			'maxlength' => '255',
 			'searchable' => 2
 		),
-		'imap_prefix' => array (
-			'datatype' => 'VARCHAR',
-			'formtype' => 'TEXT',
-			'filters'   => array(
-					0 => array( 'event' => 'SAVE',
-					'type' => 'STRIPTAGS'),
-					1 => array( 'event' => 'SAVE',
-					'type' => 'STRIPNL')
+	)
+);
+
+if($app->auth->is_admin()) {
+	$form["tabs"]['mailuser']['fields'] += array(
+			'imap_prefix' => array (
+				'datatype' => 'VARCHAR',
+				'formtype' => 'TEXT',
+				'filters'   => array(
+						0 => array( 'event' => 'SAVE',
+						'type' => 'STRIPTAGS'),
+						1 => array( 'event' => 'SAVE',
+						'type' => 'STRIPNL')
+				),
+				'default' => '',
+				'value'  => '',
+				'width'  => '30',
+				'maxlength' => '255',
 			),
-			'default' => '',
-			'value'  => '',
-			'width'  => '30',
-			'maxlength' => '255',
-		),
+	);
+}
+
+$form["tabs"]['mailuser']['fields'] += array(
 		'maildir' => array (
 			'datatype' => 'VARCHAR',
 			'formtype' => 'TEXT',
@@ -335,7 +344,6 @@ $form["tabs"]['mailuser'] = array(
 		//#################################
 		// END Datatable fields
 		//#################################
-	)
 );
 
 if($global_config['mail']['mail_password_onlyascii'] == 'y') {