diff --git a/pkgs/applications/misc/pstree/default.nix b/pkgs/applications/misc/pstree/default.nix
index 3d526e3f3e7..cfa772e8b5e 100644
--- a/pkgs/applications/misc/pstree/default.nix
+++ b/pkgs/applications/misc/pstree/default.nix
@@ -4,7 +4,10 @@ stdenv.mkDerivation rec {
   name = "pstree-2.39";
 
   src = fetchurl {
-    url = "http://www.sfr-fresh.com/unix/misc/${name}.tar.gz";
+    urls = [
+      "http://www.sfr-fresh.com/unix/misc/${name}.tar.gz"
+      "http://distfiles.macports.org/pstree/${name}.tar.gz"
+    ];
     sha256 = "17s7v15c4gryjpi11y1xq75022nkg4ggzvjlq2dkmyg67ssc76vw";
   };