diff --git a/README.md b/README.md
index 834e106..15823c5 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,15 @@
 go-fastping
 ===========
 
-go-fastping is a Go language port of Marc Lehmann's AnyEvent::FastPing Perl
-module to send ICMP ECHO REQUEST packets quickly. Original Perl module is
+go-fastping is a Go language's ICMP ping library inspired by AnyEvent::FastPing
+Perl module to send ICMP ECHO REQUEST packets quickly. Original Perl module is
 available at
 http://search.cpan.org/~mlehmann/AnyEvent-FastPing-2.01/
 
 It hasn't been fully implemented original functions yet and only for IPv4 now.
 
+[![GoDoc](https://godoc.org/github.com/tatsushid/go-fastping?status.svg)](https://godoc.org/github.com/tatsushid/go-fastping)
+
 ## Installation
 
 Install and update this go package with `go get -u github.com/tatsushid/go-fastping`
diff --git a/fastping.go b/fastping.go
index 2bc318d..8873790 100644
--- a/fastping.go
+++ b/fastping.go
@@ -1,6 +1,6 @@
-// Package fastping is a Go language port of Marc Lehmann's AnyEvent::FastPing
-// Perl module to send ICMP ECHO REQUEST packets quickly. Original Perl module
-// is available at
+// Package fastping is an ICMP ping library inspired by AnyEvent::FastPing Perl
+// module to send ICMP ECHO REQUEST packets quickly. Original Perl module is
+// available at
 // http://search.cpan.org/~mlehmann/AnyEvent-FastPing-2.01/
 //
 // It hasn't been fully implemented original functions yet and only for IPv4