diff --git a/pkgs/by-name/zr/zram-generator/package.nix b/pkgs/by-name/zr/zram-generator/package.nix
index c8be4c66a330..d92690792bba 100644
--- a/pkgs/by-name/zr/zram-generator/package.nix
+++ b/pkgs/by-name/zr/zram-generator/package.nix
@@ -1,13 +1,14 @@
-{ lib
-, stdenv
-, fetchFromGitHub
-, rustPlatform
-, pkg-config
-, bash
-, ronn
-, systemd
-, kmod
-, nixosTests
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  rustPlatform,
+  pkg-config,
+  bash,
+  ronn,
+  systemd,
+  kmod,
+  nixosTests,
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -28,10 +29,10 @@ rustPlatform.buildRustPackage rec {
   postPatch = ''
     cp ${./Cargo.lock} Cargo.lock
     substituteInPlace Makefile \
-      --replace 'target/$(BUILDTYPE)' 'target/${stdenv.hostPlatform.rust.rustcTargetSpec}/$(BUILDTYPE)'
+      --replace-fail 'target/$(BUILDTYPE)' 'target/${stdenv.hostPlatform.rust.rustcTargetSpec}/$(BUILDTYPE)'
     substituteInPlace src/generator.rs \
-      --replace 'Command::new("systemd-detect-virt")' 'Command::new("${systemd}/bin/systemd-detect-virt")' \
-      --replace 'Command::new("modprobe")' 'Command::new("${kmod}/bin/modprobe")'
+      --replace-fail 'Command::new("systemd-detect-virt")' 'Command::new("${systemd}/bin/systemd-detect-virt")' \
+      --replace-fail 'Command::new("modprobe")' 'Command::new("${kmod}/bin/modprobe")'
     substituteInPlace src/config.rs \
       --replace-fail 'Command::new("/bin/sh")' 'Command::new("${bash}/bin/sh")'
   '';