diff --git a/libraries/AP_Relay/AP_Relay.h b/libraries/AP_Relay/AP_Relay.h
index 18aad6e93b..863255fea9 100644
--- a/libraries/AP_Relay/AP_Relay.h
+++ b/libraries/AP_Relay/AP_Relay.h
@@ -26,6 +26,9 @@ class AP_Relay {
     // 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); }
 
@@ -58,8 +61,6 @@ class AP_Relay {
     uint8_t _pin_states;
     uint8_t _last_logged_pin_states;
     uint32_t _last_log_ms;
-
-    void set(uint8_t instance, bool value);
 };
 
 namespace AP {