1 files changed, 2 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/development/ocaml-modules/visitors/default.nix b/nixpkgs/pkgs/development/ocaml-modules/visitors/default.nix
index 36205c7c1ff4..35cdfc3a9af4 100644
--- a/nixpkgs/pkgs/development/ocaml-modules/visitors/default.nix
+++ b/nixpkgs/pkgs/development/ocaml-modules/visitors/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "ocaml${ocaml.version}-visitors-20190711";
 
   src = fetchurl {
-    url = http://gallium.inria.fr/~fpottier/visitors/visitors-20190711.tar.gz;
+    url = "http://gallium.inria.fr/~fpottier/visitors/visitors-20190711.tar.gz";
     sha256 = "1h794xczfczf573mpwzm4ah9ir1rbbrkqipbh3aflfpdq2mgsbvg";
   };
 
@@ -14,7 +14,7 @@ stdenv.mkDerivation {
   createFindlibDestdir = true;
 
   meta = with stdenv.lib; {
-    homepage = https://gitlab.inria.fr/fpottier/visitors;
+    homepage = "https://gitlab.inria.fr/fpottier/visitors";
     license = licenses.lgpl21;
     description = "An OCaml syntax extension (technically, a ppx_deriving plugin) which generates object-oriented visitors for traversing and transforming data structures";
     inherit (ocaml.meta) platforms;