diff --git a/.travis.yml b/.travis.yml
index da824cb..d43e278 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ go:
   - 1.5
   - 1.6
   - 1.7
+  - 1.8
   - tip
 
 matrix:
diff --git a/cmux_test.go b/cmux_test.go
index 17945c8..5331519 100644
--- a/cmux_test.go
+++ b/cmux_test.go
@@ -42,7 +42,7 @@ const (
 )
 
 func safeServe(errCh chan<- error, muxl CMux) {
-	if err := muxl.Serve(); !strings.Contains(err.Error(), "use of closed network connection") {
+	if err := muxl.Serve(); !strings.Contains(err.Error(), "use of closed") {
 		errCh <- err
 	}
 }