diff --git a/INSTALL b/INSTALL
index 05a3eb94..66bbc7de 100644
--- a/INSTALL
+++ b/INSTALL
@@ -69,7 +69,7 @@ If you want to "dry run" without WebKitGTK+ rendering, try this:
 
 If you want to test bookmarks, you can enable database tracing:
 
-'MIDORI_BOOKMARKS_DEBUG=1 _build/default/midori/midori'
+'MIDORI_DEBUG=bookmarks _build/default/midori/midori'
 
 To disable Netscape plugins, use MOZ_PLUGIN_PATH=/.