diff --git a/core/site.go b/core/site.go
index 9b7ba509b..35fae45e8 100644
--- a/core/site.go
+++ b/core/site.go
@@ -459,6 +459,10 @@ func (site *Site) Prepare(uiChan chan<- util.Param, pushChan chan<- push.Event)
 		}(id)
 
 		lp.Prepare(lpUIChan, lpPushChan, site.lpUpdateChan)
+
+		// add loadpoint number
+		num := id + 1
+		lp.publish("loadpoint", &num)
 	}
 }