diff --git a/ios/A0Auth0.m b/ios/A0Auth0.m
index e764cfff..8751fbfa 100644
--- a/ios/A0Auth0.m
+++ b/ios/A0Auth0.m
@@ -136,7 +136,7 @@ - (void)safariViewControllerDidFinish:(SFSafariViewController *)controller {
 
 - (void)safariViewController:(SFSafariViewController *)controller didCompleteInitialLoad:(BOOL)didLoadSuccessfully {
     if (self.didLoadCallback) {
-        didLoadSuccessfully ? self.didLoadCallback(@[[NSNull null]]) : self.didLoadCallback(@[@{@"error": @"failed to clear session"}]);
+        didLoadSuccessfully ? self.didLoadCallback(@[[NSNull null]]) : self.didLoadCallback(@[@{@"error": @"failed to load"}]);
         self.didLoadCallback = nil;
     } else if (!didLoadSuccessfully) {
         NSDictionary *error = @{
diff --git a/webauth/index.js b/webauth/index.js
index d69d8f4e..97c2df71 100644
--- a/webauth/index.js
+++ b/webauth/index.js
@@ -103,14 +103,20 @@ export default class WebAuth {
    *
    * @param {Object} parameters parameters to send
    * @param {Bool} [parameters.federated] Optionally remove the IdP session.
-   * @returns {Callback}
+   * @returns {Promise}
    * @see https://auth0.com/docs/logout
    *
    * @memberof WebAuth
    */
-  clearSession(options = {}, callback) {
+  clearSession(options = {}) {
     const { clientId, domain, client, agent } = this;
     const federated = options.federated || false;
-    A0Auth0.clearSession(domain, federated, callback);
+    return new Promise(function (resolve, reject) {
+      if (Platform.OS !== 'ios') { reject(new Error('clearSession only supported in iOS')); }
+      A0Auth0.clearSession(domain, federated, function (err, data) {
+        if (err !== null) return reject(err);
+        resolve();
+      });
+    });
   }
 }