diff --git a/platform/install.provision.inc b/platform/install.provision.inc
index adfe6a3..7c093b0 100644
--- a/platform/install.provision.inc
+++ b/platform/install.provision.inc
@@ -18,8 +18,8 @@ function drush_provision_drupal_provision_install_validate() {
   if (!d()->uri) {
     return drush_set_error("PROVISION_URL_REQUIRED", dt("You need to specify a valid url to install a site"));
   }
-  if (_provision_drupal_site_exists()) {
-    return drush_set_error('PROVISION_SITE_INSTALLED');
+  if (drush_bootstrap_max() == DRUSH_BOOTSTRAP_DRUPAL_LOGIN) {
+    return drush_set_error('PROVISION_SITE_INSTALLED', dt('This site has already been installed.'));
   }
 }
 
diff --git a/platform/provision_drupal.drush.inc b/platform/provision_drupal.drush.inc
index 05a4977..4f49905 100644
--- a/platform/provision_drupal.drush.inc
+++ b/platform/provision_drupal.drush.inc
@@ -72,16 +72,6 @@ function provision_drupal_drush_exit() {
 }
 
 /**
- * Test to see if the site settings.php exists
- *
- * @return
- *   If the file exists, return TRUE, else return FALSE.
- */
-function _provision_drupal_site_exists() {
-  return is_readable(d()->site_path . '/settings.php');
-}
-
-/**
  * This command does the actual installation in it's own thread,
  * so we can recover gracefully if things go really wrong.
  */