diff --git a/lib/default.nix b/lib/default.nix
index c77ce88cc440..21e4bab2b942 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -146,7 +146,7 @@ let
       scrubOptionValue literalExpression literalExample
       showOption showOptionWithDefLocs showFiles
       unknownModule mkOption mkPackageOption mkPackageOptionMD
-      literalMD;
+      mdDoc literalMD;
     inherit (self.types) isType setType defaultTypeMerge defaultFunctor
       isOptionType mkOptionType;
     inherit (self.asserts)