diff --git a/src/BasePlatform.ts b/src/BasePlatform.ts
index aed063ca32..1d11495e61 100644
--- a/src/BasePlatform.ts
+++ b/src/BasePlatform.ts
@@ -25,8 +25,8 @@ import {CheckUpdatesPayload} from "./dispatcher/payloads/CheckUpdatesPayload";
 import {Action} from "./dispatcher/actions";
 import {hideToast as hideUpdateToast} from "./toasts/UpdateToast";
 
-export const HOMESERVER_URL_KEY = "mx_hs_url";
-export const ID_SERVER_URL_KEY = "mx_is_url";
+export const SSO_HOMESERVER_URL_KEY = "mx_sso_hs_url";
+export const SSO_ID_SERVER_URL_KEY = "mx_sso_is_url";
 
 export enum UpdateCheckStatus {
     Checking = "CHECKING",
@@ -221,21 +221,12 @@ export default abstract class BasePlatform {
 
     setLanguage(preferredLangs: string[]) {}
 
-    getSSOCallbackUrl(fragmentAfterLogin: string): URL {
+    protected getSSOCallbackUrl(fragmentAfterLogin: string): URL {
         const url = new URL(window.location.href);
         url.hash = fragmentAfterLogin || "";
         return url;
     }
 
-    // persist hs url and is url for when the user is returned to the app with the login token
-    // MUST be called before using URLs from getSSOCallbackUrl, internally called by startSingleSignOn
-    persistSSODetails(mxClient: MatrixClient) {
-        localStorage.setItem(HOMESERVER_URL_KEY, mxClient.getHomeserverUrl());
-        if (mxClient.getIdentityServerUrl()) {
-            localStorage.setItem(ID_SERVER_URL_KEY, mxClient.getIdentityServerUrl());
-        }
-    }
-
     /**
      * Begin Single Sign On flows.
      * @param {MatrixClient} mxClient the matrix client using which we should start the flow
@@ -243,7 +234,11 @@ export default abstract class BasePlatform {
      * @param {string} fragmentAfterLogin the hash to pass to the app during sso callback.
      */
     startSingleSignOn(mxClient: MatrixClient, loginType: "sso" | "cas", fragmentAfterLogin: string) {
-        this.persistSSODetails(mxClient);
+        // persist hs url and is url for when the user is returned to the app with the login token
+        localStorage.setItem(SSO_HOMESERVER_URL_KEY, mxClient.getHomeserverUrl());
+        if (mxClient.getIdentityServerUrl()) {
+            localStorage.setItem(SSO_ID_SERVER_URL_KEY, mxClient.getIdentityServerUrl());
+        }
         const callbackUrl = this.getSSOCallbackUrl(fragmentAfterLogin);
         window.location.href = mxClient.getSsoLoginUrl(callbackUrl.toString(), loginType); // redirect to SSO
     }
diff --git a/src/Lifecycle.js b/src/Lifecycle.js
index 96cefaf593..facde3011c 100644
--- a/src/Lifecycle.js
+++ b/src/Lifecycle.js
@@ -41,7 +41,10 @@ import {IntegrationManagers} from "./integrations/IntegrationManagers";
 import {Mjolnir} from "./mjolnir/Mjolnir";
 import DeviceListener from "./DeviceListener";
 import {Jitsi} from "./widgets/Jitsi";
-import {HOMESERVER_URL_KEY, ID_SERVER_URL_KEY} from "./BasePlatform";
+import {SSO_HOMESERVER_URL_KEY, SSO_ID_SERVER_URL_KEY} from "./BasePlatform";
+
+export const HOMESERVER_URL_KEY = "mx_hs_url";
+export const ID_SERVER_URL_KEY = "mx_is_url";
 
 /**
  * Called at startup, to attempt to build a logged-in Matrix session. It tries
@@ -164,8 +167,8 @@ export function attemptTokenLogin(queryParams, defaultDeviceDisplayName) {
         return Promise.resolve(false);
     }
 
-    const homeserver = localStorage.getItem(HOMESERVER_URL_KEY);
-    const identityServer = localStorage.getItem(ID_SERVER_URL_KEY);
+    const homeserver = localStorage.getItem(SSO_HOMESERVER_URL_KEY);
+    const identityServer = localStorage.getItem(SSO_ID_SERVER_URL_KEY);
     if (!homeserver) {
         console.warn("Cannot log in with token: can't determine HS URL to use");
         return Promise.resolve(false);
diff --git a/src/components/structures/auth/SoftLogout.js b/src/components/structures/auth/SoftLogout.js
index a2824b63a3..6577386fae 100644
--- a/src/components/structures/auth/SoftLogout.js
+++ b/src/components/structures/auth/SoftLogout.js
@@ -25,7 +25,7 @@ import {MatrixClientPeg} from "../../../MatrixClientPeg";
 import {sendLoginRequest} from "../../../Login";
 import AuthPage from "../../views/auth/AuthPage";
 import SSOButton from "../../views/elements/SSOButton";
-import {HOMESERVER_URL_KEY, ID_SERVER_URL_KEY} from "../../../BasePlatform";
+import {SSO_HOMESERVER_URL_KEY, SSO_ID_SERVER_URL_KEY} from "../../../BasePlatform";
 
 const LOGIN_VIEW = {
     LOADING: 1,
@@ -158,8 +158,8 @@ export default class SoftLogout extends React.Component {
     async trySsoLogin() {
         this.setState({busy: true});
 
-        const hsUrl = localStorage.getItem(HOMESERVER_URL_KEY);
-        const isUrl = localStorage.getItem(ID_SERVER_URL_KEY) || MatrixClientPeg.get().getIdentityServerUrl();
+        const hsUrl = localStorage.getItem(SSO_HOMESERVER_URL_KEY);
+        const isUrl = localStorage.getItem(SSO_ID_SERVER_URL_KEY) || MatrixClientPeg.get().getIdentityServerUrl();
         const loginType = "m.login.token";
         const loginParams = {
             token: this.props.realQueryParams['loginToken'],