diff --git a/pkgs/by-name/ch/chntpw/package.nix b/pkgs/by-name/ch/chntpw/package.nix
index 6687cd9ad6935..603120053e27a 100644
--- a/pkgs/by-name/ch/chntpw/package.nix
+++ b/pkgs/by-name/ch/chntpw/package.nix
@@ -58,6 +58,11 @@ stdenv.mkDerivation rec {
       url = "https://sources.debian.org/data/main/c/chntpw/140201-1/debian/patches/14_improve_description";
       sha256 = "11y5kc4dh4zv24nkb0jw2zwlifx6nzsd4jbizn63l6dbpqgb25rs";
     })
+    (fetchpatch {
+      name = "17_hexdump-pointer-type.patch";
+      url = "https://git.launchpad.net/ubuntu/+source/chntpw/plain/debian/patches/17_hexdump-pointer-type.patch?id=aed501c87499f403293e7b9f505277567c2f3b52";
+      sha256 = "sha256-ir9LFl8FJq141OwF5SbyVMtjQ1kTMH1NXlHl0XZq7m8=";
+    })
   ];
 
   installPhase = ''