diff --git a/src/components/views/dialogs/LeaveSpaceDialog.tsx b/src/components/views/dialogs/LeaveSpaceDialog.tsx
index 74fec7eae2..804987f53a 100644
--- a/src/components/views/dialogs/LeaveSpaceDialog.tsx
+++ b/src/components/views/dialogs/LeaveSpaceDialog.tsx
@@ -41,7 +41,14 @@ const isOnlyAdmin = (room: Room): boolean => {
 };
 
 const LeaveSpaceDialog: React.FC<IProps> = ({ space, onFinished }) => {
-    const spaceChildren = useMemo(() => SpaceStore.instance.getChildren(space.roomId), [space.roomId]);
+    const spaceChildren = useMemo(() => {
+        const roomSet = new Set(SpaceStore.instance.getSpaceFilteredRoomIds(space.roomId));
+        SpaceStore.instance.traverseSpace(space.roomId, spaceId => {
+            if (space.roomId === spaceId) return; // skip the root node
+            roomSet.add(spaceId);
+        }, false);
+        return Array.from(roomSet).map(roomId => space.client.getRoom(roomId)).filter(Boolean);
+    }, [space]);
     const [roomsToLeave, setRoomsToLeave] = useState<Room[]>([]);
     const selectedRooms = useMemo(() => new Set(roomsToLeave), [roomsToLeave]);