diff --git a/manifests/init.pp b/manifests/init.pp
index 2de6ac5ed..be449022b 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -73,7 +73,7 @@
   $fastcgi_cache_levels           = '1',
   $fastcgi_cache_max_size         = '500m',
   $fastcgi_cache_path             = false,
-  $fastcgi_cache_use_stale        = false,
+  $fastcgi_cache_use_stale        = undef,
   $gzip                           = 'on',
   $gzip_buffers                   = undef,
   $gzip_comp_level                = 1,
@@ -220,9 +220,6 @@
   if ($fastcgi_cache_key != false) {
     validate_string($fastcgi_cache_key)
   }
-  if ($fastcgi_cache_use_stale != false) {
-    validate_string($fastcgi_cache_use_stale)
-  }
 
   validate_bool($mail)
   validate_bool($stream)