1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/development/libraries/science/math/liblbfgs/default.nix b/pkgs/development/libraries/science/math/liblbfgs/default.nix
index 33e8baada83..49108e5e330 100644
--- a/pkgs/development/libraries/science/math/liblbfgs/default.nix
+++ b/pkgs/development/libraries/science/math/liblbfgs/default.nix
@@ -4,13 +4,13 @@ stdenv.mkDerivation {
 
   configureFlags = [ "--enable-sse2" ];
   src = fetchurl {
-    url = https://github.com/downloads/chokkan/liblbfgs/liblbfgs-1.10.tar.gz;
+    url = "https://github.com/downloads/chokkan/liblbfgs/liblbfgs-1.10.tar.gz";
     sha256 = "1kv8d289rbz38wrpswx5dkhr2yh4fg4h6sszkp3fawxm09sann21";
   };
 
   meta = {
     description = "Library of Limited-memory Broyden-Fletcher-Goldfarb-Shanno (L-BFGS)";
-    homepage = http://www.chokkan.org/software/liblbfgs/;
+    homepage = "http://www.chokkan.org/software/liblbfgs/";
     license = stdenv.lib.licenses.mit;
     platforms = stdenv.lib.platforms.unix;
   };