diff --git a/pkgs/by-name/lo/logiops/package.nix b/pkgs/by-name/lo/logiops/package.nix
index e2e136bb170c..369cd824a4d3 100644
--- a/pkgs/by-name/lo/logiops/package.nix
+++ b/pkgs/by-name/lo/logiops/package.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation (oldAttrs: {
     "-DDBUS_SYSTEM_POLICY_INSTALL_DIR=${placeholder "out"}/share/dbus-1/system.d"
   ];
 
-  PKG_CONFIG_SYSTEMD_SYSTEMDSYSTEMUNITDIR = "${placeholder "out"}/lib/systemd/system";
+  env.PKG_CONFIG_SYSTEMD_SYSTEMDSYSTEMUNITDIR = "${placeholder "out"}/lib/systemd/system";
 
   meta = {
     description = "Unofficial userspace driver for HID++ Logitech devices";
diff --git a/pkgs/by-name/lo/logiops_0_2_3/package.nix b/pkgs/by-name/lo/logiops_0_2_3/package.nix
index 7c08fb49023c..c7228d4f9912 100644
--- a/pkgs/by-name/lo/logiops_0_2_3/package.nix
+++ b/pkgs/by-name/lo/logiops_0_2_3/package.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-1v728hbIM2ODtB+r6SYzItczRJCsbuTvhYD2OUM1+/E=";
   };
 
-  PKG_CONFIG_SYSTEMD_SYSTEMDSYSTEMUNITDIR = "${placeholder "out"}/lib/systemd/system";
+  env.PKG_CONFIG_SYSTEMD_SYSTEMDSYSTEMUNITDIR = "${placeholder "out"}/lib/systemd/system";
 
   nativeBuildInputs = [
     cmake