diff --git a/pos_backend_communication/README.rst b/pos_backend_communication/README.rst
index ca05954d..dcd2c35e 100644
--- a/pos_backend_communication/README.rst
+++ b/pos_backend_communication/README.rst
@@ -38,6 +38,11 @@ Roadmap
 - Try to use frames instead of popups
 - Use notifications for supported browsers
 
+Known limitation
+================
+
+- It doesn't work offline.
+
 Bug Tracker
 ===========