diff --git a/firmware/common/rffc5071.c b/firmware/common/rffc5071.c
index 653a28a8..10542b6c 100644
--- a/firmware/common/rffc5071.c
+++ b/firmware/common/rffc5071.c
@@ -117,6 +117,10 @@ void rffc5071_setup(rffc5071_driver_t* const drv)
 	/* GPOs are active at all times */
 	set_RFFC5071_GATE(drv, 1);
 
+	/* Output LOCK status on GPO4 and enable lock detect */
+	set_RFFC5071_LOCK(drv, 1);
+	set_RFFC5071_LDEN(drv, 1);
+
 	rffc5071_regs_commit(drv);
 }