diff --git a/register_judges_personal.php b/register_judges_personal.php
index adc4249..7ecef49 100644
--- a/register_judges_personal.php
+++ b/register_judges_personal.php
@@ -76,9 +76,12 @@
 	}
 	mysql_query("DELETE FROM judges_catpref WHERE judges_id='".$_SESSION['judges_id']."'");
 
-	foreach($_POST['catpref'] AS $k=>$v)
+	if(is_array($_POST['catpref']))
 	{
-		mysql_query("INSERT INTO judges_catpref (judges_id,projectcategories_id,rank,year) values ('".$_SESSION['judges_id']."','$k','$v','".$config['FAIRYEAR']."')");
+		foreach($_POST['catpref'] AS $k=>$v)
+		{
+			mysql_query("INSERT INTO judges_catpref (judges_id,projectcategories_id,rank,year) values ('".$_SESSION['judges_id']."','$k','$v','".$config['FAIRYEAR']."')");
+		}
 	}
 
 	echo notice(i18n("%1 %2 successfully updated",array($_POST['firstname'],$_POST['lastname'])));