diff --git a/README.md b/README.md
index 4b81567..7f5761a 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 ![Build Status](https://github.com/olahol/melody/actions/workflows/test.yml/badge.svg)
 [![Codecov](https://img.shields.io/codecov/c/github/olahol/melody)](https://app.codecov.io/github/olahol/melody)
+[![Go Report Card](https://goreportcard.com/badge/github.com/olahol/melody)](https://goreportcard.com/report/github.com/olahol/melody)
 [![GoDoc](https://godoc.org/github.com/olahol/melody?status.svg)](https://godoc.org/github.com/olahol/melody)
 
 > :notes: Minimalist websocket framework for Go.
diff --git a/session.go b/session.go
index d9f9b4f..8bb81c9 100644
--- a/session.go
+++ b/session.go
@@ -186,7 +186,7 @@ func (s *Session) CloseWithMsg(msg []byte) error {
 	return nil
 }
 
-// Set is used to store a new key/value pair exclusivelly for this session.
+// Set is used to store a new key/value pair exclusively for this session.
 // It also lazy initializes s.Keys if it was not used previously.
 func (s *Session) Set(key string, value interface{}) {
 	s.rwmutex.Lock()