diff --git a/bot.go b/bot.go
index 0e38ed9..0a35192 100644
--- a/bot.go
+++ b/bot.go
@@ -728,7 +728,7 @@ func botCraftItem(m *ChatWarsMessage, r *regexp.Regexp) {
 	p.ObjItemID64, err = getCraftItemID(r.ReplaceAllString(m.Text, "${Cmd}"))
 	logOnError(err, "botCraftItem : getCraftItemID")
 
-	if r.ReplaceAllString(m.Text, "${Quantity}") != nil {
+	if len(r.ReplaceAllString(m.Text, "${Quantity}")) > 0 {
 		p.Quantity, err = strconv.ParseInt(r.ReplaceAllString(m.Text, "${Quantity}"), 10, 64)
 		logOnError(err, "botCraftItem : ParseInt")
 	} else {