diff --git a/src/view/form/control/AphrontFormRecaptchaControl.php b/src/view/form/control/AphrontFormRecaptchaControl.php
index f56dceb50d..ff74eb4bf5 100644
--- a/src/view/form/control/AphrontFormRecaptchaControl.php
+++ b/src/view/form/control/AphrontFormRecaptchaControl.php
@@ -1,74 +1,78 @@
 <?php
 
 /*
  * Copyright 2012 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 /**
  *
  * @phutil-external-symbol function recaptcha_get_html
  * @phutil-external-symbol function recaptcha_check_answer
  */
 final class AphrontFormRecaptchaControl extends AphrontFormControl {
 
   protected function getCustomControlClass() {
     return 'aphront-form-control-recaptcha';
   }
 
   protected function shouldRender() {
     return self::isRecaptchaEnabled();
   }
 
   public static function isRecaptchaEnabled() {
     return PhabricatorEnv::getEnvConfig('recaptcha.enabled');
   }
 
   private static function requireLib() {
     $root = phutil_get_library_root('phabricator');
     require_once dirname($root).'/externals/recaptcha/recaptchalib.php';
   }
 
   public static function hasCaptchaResponse(AphrontRequest $request) {
     return $request->getBool('recaptcha_response_field');
   }
 
   public static function processCaptcha(AphrontRequest $request) {
     if (!self::isRecaptchaEnabled()) {
       return true;
     }
 
     self::requireLib();
 
     $challenge = $request->getStr('recaptcha_challenge_field');
     $response = $request->getStr('recaptcha_response_field');
     $resp = recaptcha_check_answer(
       PhabricatorEnv::getEnvConfig('recaptcha.private-key'),
       $_SERVER['REMOTE_ADDR'],
       $challenge,
       $response);
 
     return (bool)@$resp->is_valid;
   }
 
   protected function renderInput() {
     self::requireLib();
 
+    $uri = new PhutilURI(PhabricatorEnv::getEnvConfig('phabricator.base-uri'));
+    $protocol = $uri->getProtocol();
+    $use_ssl = ($protocol == 'https');
+
     return recaptcha_get_html(
       PhabricatorEnv::getEnvConfig('recaptcha.public-key'),
       $error = null,
-      $use_ssl = false);
+      $use_ssl);
   }
 
 }