diff --git a/ihp.nix b/ihp.nix
index 298ee3e54..1c45d0774 100644
--- a/ihp.nix
+++ b/ihp.nix
@@ -145,7 +145,7 @@ mkDerivation {
 
   # For faster builds when hacking on IHP:
   # Uncommenting will build without optimizations
-  # configureFlags = [ "--flag FastBuild" ];
+   configureFlags = [ "--flag FastBuild" ];
   # Uncommenting will not generate documentation
-  # doHaddock = false;
+   doHaddock = false;
 }