diff --git a/boards/sim/sim/sim/src/sim_bringup.c b/boards/sim/sim/sim/src/sim_bringup.c
index 4d85affd9c0..77bb15e3ebb 100644
--- a/boards/sim/sim/sim/src/sim_bringup.c
+++ b/boards/sim/sim/sim/src/sim_bringup.c
@@ -463,11 +463,12 @@ int sim_bringup(void)
 #endif
 
 #ifdef CONFIG_RPTUN
-#ifdef CONFIG_SIM_RPTUN_MASTER
+#  ifdef CONFIG_SIM_RPTUN_MASTER
   sim_rptun_init("server-proxy", "proxy",
                  SIM_RPTUN_MASTER | SIM_RPTUN_NOBOOT);
-#else
+#  else
   sim_rptun_init("server-proxy", "server", SIM_RPTUN_SLAVE);
+#  endif
 #endif
 
 #ifdef CONFIG_DEV_RPMSG
@@ -483,7 +484,6 @@ int sim_bringup(void)
 #ifdef CONFIG_RPMSGMTD
   rpmsgmtd_register("server", "/dev/rammtd", NULL);
 #endif
-#endif
 
 #ifdef CONFIG_SIM_WTGAHRS2_UARTN
 #if CONFIG_SIM_WTGAHRS2_UARTN == 0