diff --git a/format/rtmp/rtmp.go b/format/rtmp/rtmp.go
index 7d7c459..ea1454a 100644
--- a/format/rtmp/rtmp.go
+++ b/format/rtmp/rtmp.go
@@ -212,9 +212,9 @@ func (s *Server) Close() {
 	if s.listener != nil {
 		s.listener.Close()
 		s.listener = nil
-	}
 
-	close(s.doneChan)
+		close(s.doneChan)
+	}
 }
 
 const (