diff --git a/pkgs/applications/misc/thinking-rock/default.nix b/pkgs/applications/misc/thinking-rock/default.nix
index 0fb87f9555c6..553e297cf7f1 100644
--- a/pkgs/applications/misc/thinking-rock/default.nix
+++ b/pkgs/applications/misc/thinking-rock/default.nix
@@ -3,7 +3,7 @@ args.stdenv.mkDerivation {
   name = "thinkingrock-2.2.1-binary";
 
   src = args.fetchurl {
-    url = mirror://sourceforge/thinkingrock/files/ThinkingRock/TR%202.2.1/tr-2.2.1.tar.gz;
+    url = mirror://sourceforge/thinkingrock/ThinkingRock/TR%202.2.1/tr-2.2.1.tar.gz;
     sha256 = "0hnwvvyc8miiz8w2g4iy7s4rgfy0kfbncgbgfzpsq6nrzq334kgm";
   };