diff --git a/errors.go b/errors.go
index 602089c935a..a5fa87b1e6f 100644
--- a/errors.go
+++ b/errors.go
@@ -49,11 +49,6 @@ type StreamError struct {
 	Remote    bool
 }
 
-func (e *StreamError) Is(target error) bool {
-	_, ok := target.(*StreamError)
-	return ok
-}
-
 func (e *StreamError) Error() string {
 	pers := "local"
 	if e.Remote {