diff --git a/pkg/services/websms_service.go b/pkg/services/websms_service.go
index dc6c8ae..16da7bd 100644
--- a/pkg/services/websms_service.go
+++ b/pkg/services/websms_service.go
@@ -98,5 +98,9 @@ func SendWebSms(cfg *models.WebSmsConfig, para, mensaje string) (*WebSmsResponse
 		return nil, fmt.Errorf("websms: respuesta no JSON (Content-Type: %s, cuerpo: %.200s)", ct, string(respBody))
 	}
 
+	if result.Code != "0" {
+		return nil, fmt.Errorf("websms: %s (code %s)", result.Message, result.Code)
+	}
+
 	return &result, nil
 }