diff --git a/firmware/hw_layer/drivers/sent/readme.md b/firmware/hw_layer/drivers/sent/readme.md
index 9ff8f26cac..2331bb6615 100644
--- a/firmware/hw_layer/drivers/sent/readme.md
+++ b/firmware/hw_layer/drivers/sent/readme.md
@@ -1,3 +1,7 @@
+open source SAE J2716 stm32 implementation
+
+for unit test see https://github.com/rusefi/rusefi/tree/master/unit_tests/tests/sent
+
 microRusEFI
 
 23 - AN temp 2