diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2d7672b77f6..3ecbf984b52 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17454,7 +17454,9 @@ with pkgs;
 
   mjpg-streamer = callPackage ../applications/video/mjpg-streamer { };
 
-  mldonkey = callPackage ../applications/networking/p2p/mldonkey { };
+  mldonkey = callPackage ../applications/networking/p2p/mldonkey {
+    ocamlPackages = ocaml-ng.ocamlPackages_4_05;
+  };
 
   MMA = callPackage ../applications/audio/MMA { };