diff --git a/pkgs/development/python-modules/nilearn/default.nix b/pkgs/development/python-modules/nilearn/default.nix
index 4a92ec7109d..1e58aee503b 100644
--- a/pkgs/development/python-modules/nilearn/default.nix
+++ b/pkgs/development/python-modules/nilearn/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
   ];
 
   meta = with stdenv.lib; {
-    homepage = http://nilearn.github.io;
+    homepage = "http://nilearn.github.io";
     description = "A module for statistical learning on neuroimaging data";
     license = licenses.bsd3;
   };