diff --git a/oauthproxy.go b/oauthproxy.go
index 426f36c291..5ddd46bfbf 100644
--- a/oauthproxy.go
+++ b/oauthproxy.go
@@ -439,6 +439,7 @@ func (p *OAuthProxy) Proxy(rw http.ResponseWriter, req *http.Request) {
 		rw.WriteHeader(http.StatusOK)
 		if p.passAuthorization {
 			proxywasm.AddHttpRequestHeader("Authorization", fmt.Sprintf("%s %s", providers.TokenTypeBearer, session.IDToken))
+			util.Logger.Debug("Authorization header add id token")
 		}
 		if cookies, ok := rw.Header()[SetCookieHeader]; ok && len(cookies) > 0 {
 			newCookieValue := strings.Join(cookies, ",")