diff --git a/pkgs/development/libraries/haskell/diagrams/diagrams.nix b/pkgs/development/libraries/haskell/diagrams/diagrams.nix
index 84d3d9bbf48..bed30e67ea3 100644
--- a/pkgs/development/libraries/haskell/diagrams/diagrams.nix
+++ b/pkgs/development/libraries/haskell/diagrams/diagrams.nix
@@ -7,7 +7,6 @@ cabal.mkDerivation (self: {
   buildDepends = [
     diagramsContrib diagramsCore diagramsLib diagramsSvg
   ];
-  noHaddock = true;
   jailbreak = true;
   meta = {
     homepage = "http://projects.haskell.org/diagrams";