diff --git a/view.go b/view.go
index 2c4662e..f3de34e 100644
--- a/view.go
+++ b/view.go
@@ -53,8 +53,11 @@ func (v *View[K]) consumeReports(printReports bool) {
 	}()
 
 	for status := range v.reportCh {
+		if _, ok := v.taskMap[status.ID]; !ok {
+			panic(fmt.Sprintf("received report for unknown task (forgot to call View.Add()?): %v", v))
+		}
+
 		v.lastReports[status.ID] = status
-		v.Add(status.ID)
 
 		if printReports {
 			v.print()