diff --git a/public/appframework/IAppSystem.h b/public/appframework/IAppSystem.h
index 20f9285c..b3fe53bb 100644
--- a/public/appframework/IAppSystem.h
+++ b/public/appframework/IAppSystem.h
@@ -76,6 +76,9 @@ public:
 
 	// Reconnect to a particular interface
 	virtual void Reconnect( CreateInterfaceFn factory, const char *pInterfaceName ) = 0;
+	
+	// Returns whether or not the app system is a singleton
+	virtual bool IsSingleton() = 0;
 };
 
 
@@ -105,6 +108,8 @@ public:
 	{
 		ReconnectInterface( factory, pInterfaceName );
 	}
+	
+	virtual bool IsSingleton() { return true; }
 };