diff --git a/src/groups/ownership.js b/src/groups/ownership.js
index ade58e65c9..c7ae09ae2d 100644
--- a/src/groups/ownership.js
+++ b/src/groups/ownership.js
@@ -28,8 +28,10 @@ module.exports = function (Groups) {
 
 	Groups.ownership.rescind = async function (toUid, groupName) {
 		// If the owners set only contains one member (and toUid is that member), error out!
-		const numOwners = await db.setCount(`group:${groupName}:owners`);
-		const isOwner = await db.isSortedSetMember(`group:${groupName}:owners`);
+		const [numOwners, isOwner] = await Promise.all([
+			db.setCount(`group:${groupName}:owners`),
+			db.isSetMember(`group:${groupName}:owners`, toUid),
+		]);
 		if (numOwners <= 1 && isOwner) {
 			throw new Error('[[error:group-needs-owner]]');
 		}