diff --git a/tools/command/command.go b/tools/command/command.go
index b718d12..6bc6241 100644
--- a/tools/command/command.go
+++ b/tools/command/command.go
@@ -83,7 +83,7 @@ func (m *CMD) Command(name string, args ...string) {
 		if m.MessageCallback != nil {
 			m.MessageCallback(byt, nil)
 		} else {
-			if !m.IsPrint {
+			if m.IsPrint {
 				fmt.Println("line:", string(byt), b)
 			}
 		}