diff --git a/drush/Provision/Service/http/https.php b/drush/Provision/Service/http/https.php
index 5f6fdeb..65e6c09 100644
--- a/drush/Provision/Service/http/https.php
+++ b/drush/Provision/Service/http/https.php
@@ -69,6 +69,12 @@ class Provision_Service_http_https extends Provision_Service_http_public {
         $certs = $this->server->service('Certificate')->get_certificates($this->context->https_key);
         $data = array_merge($data, $certs);
       }
+
+      // Turn off https and redirection if the cert key is not readable or doesn't exist for some reason.
+      if (!is_readable($data['https_cert_key'])) {
+        $this->context->https_enabled = FALSE;
+        $data['ssl_redirection'] = FALSE;
+      }
     }
 
     return $data;