diff --git a/cabal-install/cabal-install.cabal b/cabal-install/cabal-install.cabal
index 661ade8db549897ca75dea16ae18f640d192ba1d..02ba016982815f2c5c560150245120cd571ffa0f 100644
--- a/cabal-install/cabal-install.cabal
+++ b/cabal-install/cabal-install.cabal
@@ -192,10 +192,12 @@ Flag network-uri
 Flag debug-conflict-sets
   description:  Add additional information to ConflictSets
   default:      False
+  manual:       True
 
 Flag debug-tracetree
   description:  Compile in support for tracetree (used to debug the solver)
   default:      False
+  manual:       True
 
 flag parsec
   description:  Use parsec parser. This requires 'Cabal' library built with its parsec flag enabled.