diff --git a/swarm/pss/pss_go18plus_test.go b/swarm/pss/pss_go18plus_test.go
index d4bef49edf..30d94ee714 100644
--- a/swarm/pss/pss_go18plus_test.go
+++ b/swarm/pss/pss_go18plus_test.go
@@ -1,4 +1,5 @@
 // +build go1.8
+
 package pss
 
 import (