diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 1dbb5666a5a..6543d49471c 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -19539,7 +19539,7 @@ let
     pname = "Test-Most";
     version = "0.37";
     src = fetchurl {
-      url = mirror://cpan/authors/id/O/OV/OVID/Test-Most-0.37.tar.gz;
+      url = "mirror://cpan/authors/id/O/OV/OVID/Test-Most-0.37.tar.gz";
       sha256 = "1isg8z6by113zn08l044w6k04y5m5bnns3rqmks8rwdr3qa70csk";
     };
     propagatedBuildInputs = [ ExceptionClass ];