diff --git a/src/run/run.c b/src/run/run.c
index dfb0c84144..fa77c5ea78 100644
--- a/src/run/run.c
+++ b/src/run/run.c
@@ -1133,11 +1133,17 @@ static int transient_service_set_properties(sd_bus_message *m, const char *pty_p
         }
 
         if (pty_path) {
+                _cleanup_close_ int pty_slave = -EBADF;
+
+                pty_slave = open_terminal(pty_path, O_RDWR|O_NOCTTY|O_CLOEXEC);
+                if (pty_slave < 0)
+                        return pty_slave;
+
                 r = sd_bus_message_append(m,
                                           "(sv)(sv)(sv)(sv)",
-                                          "StandardInput", "s", "tty",
-                                          "StandardOutput", "s", "tty",
-                                          "StandardError", "s", "tty",
+                                          "StandardInputFileDescriptor", "h", pty_slave,
+                                          "StandardOutputFileDescriptor", "h", pty_slave,
+                                          "StandardErrorFileDescriptor", "h", pty_slave,
                                           "TTYPath", "s", pty_path);
                 if (r < 0)
                         return bus_log_create_error(r);