diff --git a/pkgs/development/python-modules/ansi2html/default.nix b/pkgs/development/python-modules/ansi2html/default.nix
index 76775acb163..df115cf7c47 100644
--- a/pkgs/development/python-modules/ansi2html/default.nix
+++ b/pkgs/development/python-modules/ansi2html/default.nix
@@ -4,6 +4,8 @@ buildPythonPackage rec {
   pname = "ansi2html";
   version = "1.6.0";
 
+  disabled = !isPy3k;
+
   src = fetchPypi {
     inherit pname version;
     sha256 = "0f124ea7efcf3f24f1f9398e527e688c9ae6eab26b0b84e1299ef7f94d92c596";
@@ -22,6 +24,5 @@ buildPythonPackage rec {
     homepage = "https://github.com/ralphbean/ansi2html";
     license = licenses.lgpl3Plus;
     maintainers = with maintainers; [ davidtwco ];
-    platforms = platforms.all;
   };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ca6ec738164..693fd585230 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5268,7 +5268,7 @@ in
 
   mdcat = callPackage ../tools/text/mdcat {
     inherit (darwin.apple_sdk.frameworks) Security;
-    inherit (pythonPackages) ansi2html;
+    inherit (python3Packages) ansi2html;
   };
 
   medfile = callPackage ../development/libraries/medfile { };