diff --git a/test/util/fexp.go b/test/util/fexp.go
index eb1f820..2f43d4a 100644
--- a/test/util/fexp.go
+++ b/test/util/fexp.go
@@ -1,3 +1,5 @@
+// +build ignore
+
 // Fetch an URL, and check if the response matches what we expect.
 //
 // Useful for testing HTTP(s) servers.