diff --git a/src/userdb/userdbd-manager.c b/src/userdb/userdbd-manager.c
index 73b6d72026..8720721f43 100644
--- a/src/userdb/userdbd-manager.c
+++ b/src/userdb/userdbd-manager.c
@@ -4,6 +4,7 @@
 
 #include "sd-daemon.h"
 
+#include "build-path.h"
 #include "common-signal.h"
 #include "env-util.h"
 #include "fd-util.h"
@@ -191,11 +192,8 @@ static int start_one_worker(Manager *m) {
                         _exit(EXIT_FAILURE);
                 }
 
-                /* execl("/home/lennart/projects/systemd/build/systemd-userwork", "systemd-userwork", "xxxxxxxxxxxxxxxx", NULL); /\* With some extra space rename_process() can make use of *\/ */
-                /* execl("/usr/bin/valgrind", "valgrind", "/home/lennart/projects/systemd/build/systemd-userwork", "systemd-userwork", "xxxxxxxxxxxxxxxx", NULL); /\* With some extra space rename_process() can make use of *\/ */
-
-                execl(SYSTEMD_USERWORK_PATH, "systemd-userwork", "xxxxxxxxxxxxxxxx", NULL); /* With some extra space rename_process() can make use of */
-                log_error_errno(errno, "Failed start worker process: %m");
+                r = invoke_callout_binary(SYSTEMD_USERWORK_PATH, STRV_MAKE(SYSTEMD_USERWORK_PATH, "xxxxxxxxxxxxxxxx")); /* With some extra space rename_process() can make use of */
+                log_error_errno(r, "Failed start worker process: %m");
                 _exit(EXIT_FAILURE);
         }