diff --git a/routers/user/auth_openid.go b/routers/user/auth_openid.go
index a53be2d40..9d9882e5a 100644
--- a/routers/user/auth_openid.go
+++ b/routers/user/auth_openid.go
@@ -348,7 +348,7 @@ func RegisterOpenIDPost(ctx *context.Context, cpt *captcha.Captcha, form auth.Si
 
 	if setting.Service.EnableRecaptcha {
 		ctx.Req.ParseForm()
-		valid, _ := recaptcha.Verify(ctx.Req.Form.Get("g-recaptcha-response"))
+		valid, _ := recaptcha.Verify(form.GRecaptchaResponse)
 		if !valid {
 			ctx.Data["Err_Captcha"] = true
 			ctx.RenderWithErr(ctx.Tr("form.captcha_incorrect"), tplSignUpOID, &form)