diff --git a/command.go b/command.go
index f52d490..ff0a0ae 100644
--- a/command.go
+++ b/command.go
@@ -26,7 +26,11 @@ func (c *Command) String() string {
 }
 
 func (c *Command) Param(text string) string {
-	return strings.TrimPrefix(text, "/"+c.Body+" ")
+	strs := strings.SplitN(text, " ", 2)
+	if len(strs) > 1 {
+		return strs[1]
+	}
+	return ""
 }
 
 func MakeCommandList(format string, commands ...*Command) string {