diff --git a/cmd/mtwebmapper/players.go b/cmd/mtwebmapper/players.go
index 8a9ca92..323b11f 100644
--- a/cmd/mtwebmapper/players.go
+++ b/cmd/mtwebmapper/players.go
@@ -40,7 +40,7 @@ type players struct {
 }
 
 func newPlayers(fifo string, wsf *websocketForwarder) *players {
-	return &players{fifo: fifo, wsf: wsf}
+	return &players{fifo: fifo, wsf: wsf, pls: []*player{}}
 }
 
 func (p *player) MarshalJSON() ([]byte, error) {