diff --git a/app/fax/fax_send.php b/app/fax/fax_send.php
index 9a8d453b3a..1d058f7767 100644
--- a/app/fax/fax_send.php
+++ b/app/fax/fax_send.php
@@ -991,7 +991,9 @@ if (!$included) {
 				$contact_values[] = $contact_option_value_faxnumber."|".$contact_option_value_recipient;
 				unset($contact_option_label);
 			}
-			asort($contact_labels, SORT_NATURAL); // sort by name(s)
+			if (is_array($contact_labels)) {
+				asort($contact_labels, SORT_NATURAL); // sort by name(s)
+			}
 			echo "	<select class='formfld' style='display: none;' id='fax_recipient_select' onchange='contact_load(this);'>\n";
 			echo "		<option value=''></option>\n";
 			foreach ($contact_labels as $index => $contact_label) {