diff --git a/src/core/service.c b/src/core/service.c
index 6ceb0a2057..1e14cdc6ca 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -2293,7 +2293,7 @@ static void service_enter_start_pre(Service *s) {
                 r = service_spawn(s,
                                   s->control_command,
                                   s->timeout_start_usec,
-                                  EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN|EXEC_SETENV_MONITOR_RESULT,
+                                  EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_IS_CONTROL|EXEC_APPLY_TTY_STDIN|EXEC_SETENV_MONITOR_RESULT|EXEC_WRITE_CREDENTIALS,
                                   &s->control_pid);
                 if (r < 0)
                         goto fail;