diff --git a/src/net/dial_test.go b/src/net/dial_test.go
index 784fb1d899..c36274d4d7 100644
--- a/src/net/dial_test.go
+++ b/src/net/dial_test.go
@@ -784,6 +784,7 @@ func TestDialCancel(t *testing.T) {
 					"connection refused",
 					"unreachable",
 					"no route to host",
+					"invalid argument",
 				}
 				e := err.Error()
 				for _, ignore := range ignorable {