diff --git a/msg.go b/msg.go
index 2bf10e3..5834629 100644
--- a/msg.go
+++ b/msg.go
@@ -177,7 +177,7 @@ func parseSubTypeMessageReportAck(m *ChatWarsMessage, r *regexp.Regexp) (*ChatWa
 	cwm := ChatWarsMessageReportAck{}
 	extra := r.ReplaceAllString(m.Text, "${Extra}")
 	if len(extra) > 0 {
-		log.Printf("parseSubTypeMessageReport : Extra : %s\n")
+		log.Printf("parseSubTypeMessageReport : Extra : %s\n", extra)
 	}
 	/*
 		log.Printf("parseSubTypeMessageReport : War report identified\n")