diff --git a/app/call_block/call_block_edit.php b/app/call_block/call_block_edit.php
index 0a39f221ff..30a60b3193 100644
--- a/app/call_block/call_block_edit.php
+++ b/app/call_block/call_block_edit.php
@@ -357,16 +357,16 @@
 	else {
 		echo "	<option value='hold'>".$text['label-hold']."</option>\n";
 	}
-	/*
-	if (is_array($extensions) && sizeof($extensions) != 0) {
-		echo "	<optgroup label='".$text['label-extension']."'>\n";
-		foreach ($extensions as &$row) {
-			$selected = ($call_block_app == 'extension' && $call_block_data == $row['extension']) ? "selected='selected'" : null;
-			echo "		<option value='extension:".urlencode($row["extension"])."' ".$selected.">".escape($row['extension'])." ".escape($row['description'])."</option>\n";
+	if (permission_exists('call_block_extension')) {
+		if (is_array($extensions) && sizeof($extensions) != 0) {
+			echo "	<optgroup label='".$text['label-extension']."'>\n";
+			foreach ($extensions as &$row) {
+				$selected = ($call_block_app == 'extension' && $call_block_data == $row['extension']) ? "selected='selected'" : null;
+				echo "		<option value='extension:".urlencode($row["extension"])."' ".$selected.">".escape($row['extension'])." ".escape($row['description'])."</option>\n";
+			}
+			echo "	</optgroup>\n";
 		}
-		echo "	</optgroup>\n";
 	}
-	*/
 	if (permission_exists('call_block_voicemail')) {
 		if (is_array($voicemails) && sizeof($voicemails) != 0) {
 			echo "	<optgroup label='".$text['label-voicemail']."'>\n";