diff --git a/synthesizer-dimensional.cabal b/synthesizer-dimensional.cabal
--- a/synthesizer-dimensional.cabal
+++ b/synthesizer-dimensional.cabal
@@ -1,5 +1,5 @@
 Name:           synthesizer-dimensional
-Version:        0.8
+Version:        0.8.0.1
 License:        GPL
 License-File:   LICENSE
 Author:         Henning Thielemann <haskell@henning-thielemann.de>
@@ -20,7 +20,8 @@
 
 Flag optimizeAdvanced
   description: Enable advanced optimizations. They slow down compilation considerably.
-  default:     True
+  default:     False
+  manual:      True
 
 Flag buildExamples
   description: Build example executables
@@ -32,7 +33,7 @@
   Location:    http://code.haskell.org/synthesizer/dimensional/
 
 Source-Repository this
-  Tag:         0.8
+  Tag:         0.8.0.1
   Type:        darcs
   Location:    http://code.haskell.org/synthesizer/dimensional/