diff --git a/libraries/AP_HAL_SITL/AnalogIn.cpp b/libraries/AP_HAL_SITL/AnalogIn.cpp
index 16c4479806..a31025db73 100644
--- a/libraries/AP_HAL_SITL/AnalogIn.cpp
+++ b/libraries/AP_HAL_SITL/AnalogIn.cpp
@@ -58,8 +58,9 @@ float ADCSource::read_latest() {
     }
 }
 
-void ADCSource::set_pin(uint8_t pin) {
+bool ADCSource::set_pin(uint8_t pin) {
     _pin = pin;
+    return true;
 }
 
 void AnalogIn::init() {
diff --git a/libraries/AP_HAL_SITL/AnalogIn.h b/libraries/AP_HAL_SITL/AnalogIn.h
index a2c0447f48..ae529705da 100644
--- a/libraries/AP_HAL_SITL/AnalogIn.h
+++ b/libraries/AP_HAL_SITL/AnalogIn.h
@@ -14,7 +14,7 @@ public:
     /* implement AnalogSource virtual api: */
     float read_average() override;
     float read_latest() override;
-    void set_pin(uint8_t p) override;
+    bool set_pin(uint8_t p) override;
     float voltage_average() override;
     float voltage_latest() override;
     float voltage_average_ratiometric() override {