diff --git a/cache/stores/file/lib.php b/cache/stores/file/lib.php
index 455665817eb..c8e2116b1e2 100644
--- a/cache/stores/file/lib.php
+++ b/cache/stores/file/lib.php
@@ -266,7 +266,7 @@ class cachestore_file extends cache_store implements cache_is_key_aware, cache_i
         $this->definition = $definition;
         $hash = preg_replace('#[^a-zA-Z0-9]+#', '_', $this->definition->get_id());
         $this->path = $this->filestorepath.'/'.$hash;
-        make_writable_directory($this->path);
+        make_writable_directory($this->path, false);
         if ($this->prescan && $definition->get_mode() !== self::MODE_REQUEST) {
             $this->prescan = false;
         }
@@ -318,7 +318,7 @@ class cachestore_file extends cache_store implements cache_is_key_aware, cache_i
             $dir = $this->path . '/' . $subdir;
             if ($create) {
                 // Create the directory. This function does it recursivily!
-                make_writable_directory($dir);
+                make_writable_directory($dir, false);
             }
             return $dir . '/' . $key . '.cache';
         }