diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index ab0ef9f47391..31922c7deb18 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -346,6 +346,10 @@ with self;
       url = "mirror://cpan/authors/id/P/PL/PLICEASE/Alien-Build-2.80.tar.gz";
       hash = "sha256-2e3JNrBnBbtcte5aLqi89hEaPogVkU8XfhXjwP7TAfM=";
     };
+
+    # override default postPatch to avoid patchShebangs breaking tests
+    postPatch = "";
+
     propagatedBuildInputs = [
       CaptureTiny
       FFICheckLib