diff --git a/templates/nsis/uninstaller.nsh b/templates/nsis/uninstaller.nsh
index 62affe0977c..09717a144c7 100644
--- a/templates/nsis/uninstaller.nsh
+++ b/templates/nsis/uninstaller.nsh
@@ -40,7 +40,7 @@ Section "un.install"
   !endif
 
   # delete the installed files
-  RMDir /r $INSTDIR
+  RMDir /r /REBOOTOK $INSTDIR
 
   ClearErrors
   ${GetParameters} $R0
diff --git a/test/src/nsisUpdaterTest.ts b/test/src/nsisUpdaterTest.ts
index 50a527d4878..79bc7b2ae3c 100644
--- a/test/src/nsisUpdaterTest.ts
+++ b/test/src/nsisUpdaterTest.ts
@@ -12,7 +12,10 @@ const g = (<any>global)
 g.__test_app = {
   getVersion: function () {
     return "0.0.1"
-  }
+  },
+
+  on: function () {
+  },
 }
 
 test("check updates - no versions at all", async (t) => {