diff --git a/plugin.go b/plugin.go
index 6be2781..d4ed728 100644
--- a/plugin.go
+++ b/plugin.go
@@ -161,7 +161,7 @@ func (p *Plugin) Exec() error {
 		return errors.New("missing ssh config (Host, Username)")
 	}
 
-	if len(p.Config.Password) != 0 || len(p.Config.Key) != 0 {
+	if len(p.Config.Password) != 0 && len(p.Config.Key) != 0 {
 		return errors.New("can't set password and key at the same time")
 	}