diff --git a/smartapps/smartthings/logitech-harmony-connect.src/logitech-harmony-connect.groovy b/smartapps/smartthings/logitech-harmony-connect.src/logitech-harmony-connect.groovy
index a978787..2f25fa8 100644
--- a/smartapps/smartthings/logitech-harmony-connect.src/logitech-harmony-connect.groovy
+++ b/smartapps/smartthings/logitech-harmony-connect.src/logitech-harmony-connect.groovy
@@ -44,6 +44,7 @@ definition(
     iconUrl: "https://s3.amazonaws.com/smartapp-icons/Partner/harmony.png",
     iconX2Url: "https://s3.amazonaws.com/smartapp-icons/Partner/harmony%402x.png",
     oauth: [displayName: "Logitech Harmony", displayLink: "http://www.logitech.com/en-us/harmony-remotes"]
+    singleInstance: true
 ){
 	appSetting "clientId"
 	appSetting "clientSecret"