1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/applications/science/logic/mcrl2/default.nix b/nixpkgs/pkgs/applications/science/logic/mcrl2/default.nix
index a479e31e3395..eb83eaf79c55 100644
--- a/nixpkgs/pkgs/applications/science/logic/mcrl2/default.nix
+++ b/nixpkgs/pkgs/applications/science/logic/mcrl2/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
       that can be used for modelling, validation and verification of
       concurrent systems and protocols
     '';
-    homepage = https://www.mcrl2.org/;
+    homepage = "https://www.mcrl2.org/";
     license = licenses.boost;
     maintainers = with maintainers; [ moretea ];
     platforms = platforms.unix;