diff --git a/pkgs/development/perl-modules/Po4a/default.nix b/pkgs/development/perl-modules/Po4a/default.nix
index 38569204f5a8..4f4c08cffdf6 100644
--- a/pkgs/development/perl-modules/Po4a/default.nix
+++ b/pkgs/development/perl-modules/Po4a/default.nix
@@ -57,6 +57,7 @@ buildPerlPackage rec {
     ./Build install
     for f in $out/bin/*; do
       substituteInPlace $f --replace "#! /usr/bin/env perl" "#!${perl}/bin/perl"
+      substituteInPlace $f --replace "exec perl" "exec ${perl}/bin/perl"
     done
   '';
   meta = {