diff --git a/packages/xen-api/src/index.js b/packages/xen-api/src/index.js
index 5623eb9f0..7b0d444cb 100644
--- a/packages/xen-api/src/index.js
+++ b/packages/xen-api/src/index.js
@@ -233,7 +233,7 @@ export class Xapi extends EventEmitter {
       // Try to login again.
       debug('%s: the session has been reinitialized', this._humanId)
 
-      this._sessionId = null
+      this._sessionId = notConnectedPromise
 
       return this._sessionCall(method, args)
     })