diff --git a/pkgs/tools/graphics/gnuplot/default.nix b/pkgs/tools/graphics/gnuplot/default.nix
index ce564e8de4f..6b1a3610f30 100644
--- a/pkgs/tools/graphics/gnuplot/default.nix
+++ b/pkgs/tools/graphics/gnuplot/default.nix
@@ -15,7 +15,7 @@
 
 stdenv.mkDerivation rec {
   name = "gnuplot-4.4.4";
-  
+
   src = fetchurl {
     url = "mirror://sourceforge/gnuplot/${name}.tar.gz";
     sha256 = "1zfv3npsxfn743wl65ibh11djxrc8fxzi2mgg75ppy6m12fmja6j";
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     ];
 
   meta = {
-    homepage = http://www.gnuplot.info;
+    homepage = "http://www.gnuplot.info";
     description = "A portable command-line driven graphing utility for many platforms";
     platforms = stdenv.lib.platforms.all;
   };