diff --git a/msg.go b/msg.go
index 46b1e7f..37df9d8 100644
--- a/msg.go
+++ b/msg.go
@@ -178,11 +178,11 @@ func parseSubTypeMessageReportAck(m *ChatWarsMessage, r *regexp.Regexp) (*ChatWa
 	log.Printf("parseSubTypeMessageReport : Extra : %s\n", r.ReplaceAllString(m.Text, "${Extra}"))
 	re := regexp.MustCompile(`((?P<Cry>Your battle cries were successful)|(You were outplayed by (?P<Outplayer>.*))|(?P<Stamina>🔋Stamina restored)|.+)`)
 	for i, l := range re.FindAllStringSubmatch(r.ReplaceAllString(m.Text, "${Extra}"), -1) {
-		if re.ReplaceAllString(l[0], "${Cry}") != nil {
+		if len(re.ReplaceAllString(l[0], "${Cry}")) != 0 {
 			log.Printf("parseSubTypeMessageReport : Extra[%d] : Cry\n", i)
-		} else if re.ReplaceAllString(l[0], "${Outplayer}") != nil {
+		} else if len(re.ReplaceAllString(l[0], "${Outplayer}")) != 0 {
 			log.Printf("parseSubTypeMessageReport : Extra[%d] : Outplayer\n", i)
-		} else if re.ReplaceAllString(l[0], "${Stamina}") != nil {
+		} else if len(re.ReplaceAllString(l[0], "${Stamina}")) != 0 {
 			log.Printf("parseSubTypeMessageReport : Extra[%d] : Stamina\n", i)
 		} else {
 			log.Printf("parseSubTypeMessageReport : Extra[%d] : %s\n", i, l[0])