diff --git a/config/config.sample.php b/config/config.sample.php
index 2bc1909887..27552512a8 100644
--- a/config/config.sample.php
+++ b/config/config.sample.php
@@ -1127,8 +1127,9 @@ $CONFIG = array(
 'quota_include_external_storage' => false,
 
 /**
- * Specifies how often the filesystem is checked for changes made outside
- * ownCloud.
+ * Specifies how often the local filesystem (the ownCloud data/ directory, and 
+ * NFS mounts in data/) is checked for changes made outside ownCloud. This 
+ * does not apply to external storages.
  *
  * 0 -> Never check the filesystem for outside changes, provides a performance
  * increase when it's certain that no changes are made directly to the