diff --git a/mux_httpserver_test.go b/mux_httpserver_test.go
index 5d2f4d3..db3f7c5 100644
--- a/mux_httpserver_test.go
+++ b/mux_httpserver_test.go
@@ -1,5 +1,3 @@
-// +build go1.9
-
 package mux
 
 import (