diff --git a/oauth2.go b/oauth2.go
index 74f052a..a1a44c9 100644
--- a/oauth2.go
+++ b/oauth2.go
@@ -288,7 +288,7 @@ func (tf *tokenRefresher) Token() (*Token, error) {
 	if tf.refreshToken != tk.RefreshToken {
 		tf.refreshToken = tk.RefreshToken
 	}
-	return tk, err
+	return tk, nil
 }
 
 // reuseTokenSource is a TokenSource that holds a single token in memory