diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 7e3eb299ae9..03d6d02a37b 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -15353,7 +15353,7 @@ let
     pname = "parent";
     version = "0.238";
     src = fetchurl {
-      url = mirror://cpan/authors/id/C/CO/CORION/parent-0.238.tar.gz;
+      url = "mirror://cpan/authors/id/C/CO/CORION/parent-0.238.tar.gz";
       sha256 = "1lfjqjxsvgpsn6ycah4z0qygkykj4v8ca3cdki61k2p2ygg8zx9q";
     };
   };