diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 8a868ad7a9cf..30d38f16f10e 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -18145,7 +18145,7 @@ let
     pname = "Safe-Hole";
     version = "0.14";
     src = fetchurl {
-      url = mirror://cpan/authors/id/T/TO/TODDR/Safe-Hole-0.14.tar.gz;
+      url = "mirror://cpan/authors/id/T/TO/TODDR/Safe-Hole-0.14.tar.gz";
       sha256 = "01gc2lfli282dj6a2pkpxb0vmpyavs323cbdw15gxi06pn5nxxgl";
     };
     meta = {