diff --git a/README.txt b/README.txt
index 8719601224..b7a630387b 100644
--- a/README.txt
+++ b/README.txt
@@ -36,6 +36,8 @@ Start the IDE with:
   []$ cd your/lazarus/directory
   []$ ./lazarus
 
+Under Ubuntu 10.10 and above you need
+  []$ LIBOVERLAY_SCROLLBAR=0 ./lazarus
 
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 Documentation: