diff --git a/services/sync/modules/service.js b/services/sync/modules/service.js
index d853c95716f8..107a566ca1b6 100644
--- a/services/sync/modules/service.js
+++ b/services/sync/modules/service.js
@@ -743,6 +743,10 @@ WeaveSvc.prototype = {
     })))(),
 
   logout: function WeaveSvc_logout() {
+    // No need to do anything if we're already logged out
+    if (!this._loggedIn)
+      return;
+
     this._log.info("Logging out");
     this._loggedIn = false;
     this._keyPair = {};