1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/development/libraries/bullet/roboschool-fork.nix b/nixpkgs/pkgs/development/libraries/bullet/roboschool-fork.nix
index 34a9ee3b6ee8..abb9d3e2ce3d 100644
--- a/nixpkgs/pkgs/development/libraries/bullet/roboschool-fork.nix
+++ b/nixpkgs/pkgs/development/libraries/bullet/roboschool-fork.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation {
       Bullet 3D Game Multiphysics Library provides state of the art collision
       detection, soft body and rigid body dynamics.
     '';
-    homepage = http://bulletphysics.org;
+    homepage = "http://bulletphysics.org";
     license = licenses.zlib;
     platforms = platforms.unix;
   };