diff --git a/src/room/InviteModal.tsx b/src/room/InviteModal.tsx
index b807d26f..1986374b 100644
--- a/src/room/InviteModal.tsx
+++ b/src/room/InviteModal.tsx
@@ -43,7 +43,7 @@ export const InviteModal: FC<Props> = ({ roomAlias, roomId, ...rest }) => {
         <p>{t("Copy and share this call link")}</p>
         <CopyButton
           className={styles.copyButton}
-          value={getRoomUrl(roomAlias ?? roomId, roomSharedKey)}
+          value={getRoomUrl(roomAlias ?? roomId, roomSharedKey ?? undefined)}
           data-testid="modal_inviteLink"
         />
       </ModalContent>
diff --git a/src/room/LobbyView.tsx b/src/room/LobbyView.tsx
index 3f985d79..e3f80d43 100644
--- a/src/room/LobbyView.tsx
+++ b/src/room/LobbyView.tsx
@@ -84,7 +84,7 @@ export const LobbyView: FC<Props> = ({
               variant="secondaryCopy"
               value={getRoomUrl(
                 matrixInfo.roomAlias ?? matrixInfo.roomId,
-                roomSharedKey
+                roomSharedKey ?? undefined
               )}
               className={styles.copyButton}
               copiedMessage={t("Call link copied")}