diff --git a/src/Provider/Xero.php b/src/Provider/Xero.php
index 03af79b..e7e3d72 100644
--- a/src/Provider/Xero.php
+++ b/src/Provider/Xero.php
@@ -145,6 +145,17 @@ protected function getDefaultScopes()
         return ['openid email profile'];
     }
 
+    /**
+     * Returns the string that should be used to separate scopes when building
+     * the URL for requesting an access token.
+     *
+     * @return string Scope separator, defaults to ' '
+     */
+    protected function getScopeSeparator()
+    {
+        return ' ';
+    }
+
     /**
      * Generates a resource owner object from a successful resource owner
      * details request.