diff --git a/README.md b/README.md
index 00bd71a4..a9e3ca98 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,15 @@ Permissions
 * ACCESS_NETWORK_STATE: to check if the device is connected to the internet through WiFi
 * RECEIVE_BOOT_COMPLETED: to start the firewall when starting the device
 
+Compatibility
+-------------
+
+Devices / ROMs with a broken VPN implementation:
+
+* [Samsung Galaxy A5 / Android 5.02](https://github.com/M66B/NetGuard/issues/20) (all traffic blocked)
+
+NetGuard will crash when the package *com.android.vpndialogs* has been removed.
+
 Frequently Asked Questions (FAQ)
 --------------------------------