diff --git a/views/waip.pug b/views/waip.pug
index 773ed11..62e7689 100644
--- a/views/waip.pug
+++ b/views/waip.pug
@@ -21,4 +21,5 @@ block content
   script(src='/socket.io/socket.io.js') 
   script.
     wachen_id="#{wachen_id}"
+    waip_id=null
   script(src='/js/waip.js')