diff --git a/atom/browser/browser.cc b/atom/browser/browser.cc
index 483e58a988be..c8d6104beae4 100644
--- a/atom/browser/browser.cc
+++ b/atom/browser/browser.cc
@@ -150,6 +150,7 @@ void Browser::NotifyAndShutdown() {
 
   if (process_notify_callback_set_) {
     process_singleton_->Cleanup();
+    process_notify_callback_.Reset();
   }
 
   Shutdown();