Add reference to the error value approach used in ev3go/ev3dev.
diff --git a/Go2ErrorValuesFeedback.md b/Go2ErrorValuesFeedback.md
index c5c1eb5..5180618 100644
--- a/Go2ErrorValuesFeedback.md
+++ b/Go2ErrorValuesFeedback.md
@@ -9,6 +9,7 @@
 ### Error Inspection
 
  - jimmy frasche, "[Why limit this to errors?](https://gist.github.com/jimmyfrasche/04ca2146c9130dab4d993365313722fb)", August 2018
+ - Dan Kortschak, [Carrying contract expectations and values causing errors in ev3go](https://github.com/ev3go/ev3dev/blob/master/errors.go), August 2018
  - _Your Name_, “[_Title_](#URL)”, _month year_
  - _Your Name_, “[_Title_](#URL)”, _month year_
  - etc.