diff --git a/libraries/AP_Relay/AP_Relay.h b/libraries/AP_Relay/AP_Relay.h
index 1d049ce764..c14e964c54 100644
--- a/libraries/AP_Relay/AP_Relay.h
+++ b/libraries/AP_Relay/AP_Relay.h
@@ -29,6 +29,9 @@ public:
     // setup the relay pin
     void        init();
 
+    // set relay to state
+    void set(uint8_t instance, bool value);
+
     // activate the relay
     void        on(uint8_t instance) { set(instance, true); }
 
@@ -63,8 +66,6 @@ private:
     uint8_t _pin_states;
     uint8_t _last_logged_pin_states;
     uint32_t _last_log_ms;
-
-    void set(uint8_t instance, bool value);
 };
 
 namespace AP {