diff --git a/pkgs/by-name/db/dbus-broker/package.nix b/pkgs/by-name/db/dbus-broker/package.nix
index 2bd074dd7c17..88e40e8d455c 100644
--- a/pkgs/by-name/db/dbus-broker/package.nix
+++ b/pkgs/by-name/db/dbus-broker/package.nix
@@ -155,9 +155,11 @@ stdenv.mkDerivation (finalAttrs: {
     "-D=system-console-users=gdm,sddm,lightdm"
   ];
 
-  PKG_CONFIG_SYSTEMD_SYSTEMDSYSTEMUNITDIR = "${placeholder "out"}/lib/systemd/system";
-  PKG_CONFIG_SYSTEMD_SYSTEMDUSERUNITDIR = "${placeholder "out"}/lib/systemd/user";
-  PKG_CONFIG_SYSTEMD_CATALOGDIR = "${placeholder "out"}/lib/systemd/catalog";
+  env = {
+    PKG_CONFIG_SYSTEMD_SYSTEMDSYSTEMUNITDIR = "${placeholder "out"}/lib/systemd/system";
+    PKG_CONFIG_SYSTEMD_SYSTEMDUSERUNITDIR = "${placeholder "out"}/lib/systemd/user";
+    PKG_CONFIG_SYSTEMD_CATALOGDIR = "${placeholder "out"}/lib/systemd/catalog";
+  };
 
   postInstall = ''
     install -Dm444 $src/README.md $out/share/doc/dbus-broker/README