diff --git a/ground/openpilotgcs/src/plugins/config/cfg_vehicletypes/configfixedwingwidget.h b/ground/openpilotgcs/src/plugins/config/cfg_vehicletypes/configfixedwingwidget.h
index 582420ff0..67048fa53 100644
--- a/ground/openpilotgcs/src/plugins/config/cfg_vehicletypes/configfixedwingwidget.h
+++ b/ground/openpilotgcs/src/plugins/config/cfg_vehicletypes/configfixedwingwidget.h
@@ -71,6 +71,7 @@ private:
     bool setupFixedWingMixer(double mixerFactors[8][3]);
     bool setupFixedWingElevonMixer(double mixerFactors[8][3]);
     void setupMotors(QList<QString> motorList);
+    void setupElevonServo(int channel, double roll, double pitch);
 
     void updateAirframe(QString multiRotorType);
     void setupEnabledControls(QString airframeType);