diff --git a/nixproc/backends/synit/default.nix b/nixproc/backends/synit/default.nix
index 3407c0d..cab36e5 100644
--- a/nixproc/backends/synit/default.nix
+++ b/nixproc/backends/synit/default.nix
@@ -1,4 +1,4 @@
-{ lib, writeTextFile }:
+{ lib, undaemonize, writeTextFile }:
 
 rec {
   util = import ./util.nix { inherit lib; };
@@ -12,6 +12,6 @@ rec {
 
   generateSynitService =
     import ../../backends/synit/generate-synit-service.nix {
-      inherit lib createSynitDaemon;
+      inherit lib createSynitDaemon undaemonize;
     };
 }
diff --git a/nixproc/backends/synit/generate-synit-service.nix b/nixproc/backends/synit/generate-synit-service.nix
index fa712f1..de906d8 100644
--- a/nixproc/backends/synit/generate-synit-service.nix
+++ b/nixproc/backends/synit/generate-synit-service.nix
@@ -1,4 +1,4 @@
-{ lib, createSynitDaemon }:
+{ lib, createSynitDaemon, undaemonize }:
 
 { name, description, initialize, daemon, daemonArgs, instanceName, pidFile
 , foregroundProcess, foregroundProcessArgs, path, environment, directory, umask
@@ -8,10 +8,10 @@ let
   generatedTargetSpecificArgs = {
     inherit name description environment directory dependencies;
 
-    argv = if daemon != null then
-      [ daemon ] ++ daemonArgs
+    argv = if foregroundProcess != null then
+      [ foregroundProcess ] ++ foregroundProcessArgs
     else
-      [ foregroundProcess ] ++ foregroundProcessArgs;
+      [ "${undaemonize}/bin/undaemonize" daemon ] ++ daemonArgs;
   };
 
   targetSpecificArgs = if builtins.isFunction overrides then
diff --git a/nixproc/create-managed-process/universal/create-managed-process-universal.nix b/nixproc/create-managed-process/universal/create-managed-process-universal.nix
index fa3532b..4a89d50 100644
--- a/nixproc/create-managed-process/universal/create-managed-process-universal.nix
+++ b/nixproc/create-managed-process/universal/create-managed-process-universal.nix
@@ -115,7 +115,7 @@ let
   };
 
   synit = import ../../backends/synit {
-    inherit (pkgs) lib writeTextFile;
+    inherit (pkgs) lib undaemonize writeTextFile;
   };
 
 in