diff --git a/security/Member.php b/security/Member.php
index 8da575658..c6a9fa316 100644
--- a/security/Member.php
+++ b/security/Member.php
@@ -1073,6 +1073,7 @@ class Member extends DataObject {
 	 */
 	public function isInGroup($groupID) {
 		user_error('Member::isInGroup() is deprecated. Please use inGroup() instead.', E_USER_NOTICE);
+		return $this->inGroup($groupID);
 	}
 }