diff --git a/oauth2.go b/oauth2.go
index 753aa60..6399de5 100644
--- a/oauth2.go
+++ b/oauth2.go
@@ -236,7 +236,7 @@ type contextClientFunc func(Context) (*http.Client, error)
 
 var contextClientFuncs []contextClientFunc
 
-func registerContextClietnFunc(fn contextClientFunc) {
+func registerContextClientFunc(fn contextClientFunc) {
 	contextClientFuncs = append(contextClientFuncs, fn)
 }