diff --git a/lib/licenses.nix b/lib/licenses.nix
index a376a681d58e..a4dc15c1a79c 100644
--- a/lib/licenses.nix
+++ b/lib/licenses.nix
@@ -148,6 +148,11 @@ in mkLicense lset) ({
     fullName = ''BSD 4-clause "Original" or "Old" License'';
   };
 
+  bsdOriginalShortened = {
+    spdxId = "BSD-4-Clause-Shortened";
+    fullName = "BSD 4 Clause Shortened";
+  };
+
   bsdOriginalUC = {
     spdxId = "BSD-4-Clause-UC";
     fullName = "BSD 4-Clause University of California-Specific";
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index a1fad8ad3371..44f1ae9be2e6 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -4619,7 +4619,7 @@ let
     };
     meta = {
       description = "Perl Blowfish encryption module";
-      license = with lib.licenses; [ unfreeRedistributable ];
+      license = with lib.licenses; [ bsdOriginalShortened ];
     };
   };
 
@@ -4679,7 +4679,7 @@ let
     };
     meta = {
       description = "Perl DES encryption module";
-      license = with lib.licenses; [ unfreeRedistributable ];
+      license = with lib.licenses; [ bsdOriginalShortened ];
     };
   };
 
@@ -4795,7 +4795,7 @@ let
     };
     meta = {
       description = "Perl interface to IDEA block cipher";
-      license = with lib.licenses; [ unfreeRedistributable ];
+      license = with lib.licenses; [ bsdOriginalShortened ];
     };
   };