diff --git a/2.x/trunk/README.txt b/2.x/trunk/README.txt
index a36bf3935..8700232c9 100644
--- a/2.x/trunk/README.txt
+++ b/2.x/trunk/README.txt
@@ -27,3 +27,8 @@ Plugins can be configured from Hacker > Plugins.
 
 If you experience any crashes involving plugins, make sure they 
 are up to date.
+
+The ExtendedTools plugin is only available for Windows Vista and 
+above. Disk and Network information provided by this plugin is 
+only available when running Process Hacker with administrative 
+rights.