diff --git a/src/043-state-goroutine/state-goroutine.go b/src/043-state-goroutine/state-goroutine.go
index 7846061..94eeaa5 100644
--- a/src/043-state-goroutine/state-goroutine.go
+++ b/src/043-state-goroutine/state-goroutine.go
@@ -88,3 +88,5 @@ func main() {
 	finalOpCount := atomic.LoadInt64(&opCount)
 	fmt.Println(finalOpCount)
 }
+
+// todo: complement chapter with mutex