diff --git a/pprof.go b/pprof.go
index <HASH>..<HASH> 100644
--- a/pprof.go
+++ b/pprof.go
@@ -8,6 +8,7 @@ import (
 )
 
 const (
+	// DefaultPrefix url prefix of pprof
 	DefaultPrefix = "/debug/pprof"
 )
fix: golint warning.