diff --git a/privmsg.php b/privmsg.php
index 2b75260a..c2a876a0 100644
--- a/privmsg.php
+++ b/privmsg.php
@@ -1319,6 +1319,10 @@ else if ( $submit || $refresh || $mode != '' )
 	{
 		$post_a = $lang['EDIT_MESSAGE'];
 	}
+	else
+	{
+		pm_die($lang['NONE_SELECTED']);
+	}
 
 	$s_hidden_fields = '<input type="hidden" name="folder" value="' . $folder . '" />';
 	$s_hidden_fields .= '<input type="hidden" name="mode" value="' . $mode . '" />';