diff --git a/flix/rc.ino b/flix/rc.ino
index a4b59a5..ce7e439 100644
--- a/flix/rc.ino
+++ b/flix/rc.ino
@@ -5,6 +5,8 @@
 
 #include <SBUS.h>
 
+#define INVERT_SERIAL true // false if external SBUS invertor is used
+
 // NOTE: use `cr` command and replace with the actual values
 int channelNeutral[] = {995, 883, 200, 972, 512, 512};
 int channelMax[] = {1651, 1540, 1713, 1630, 1472, 1472};
@@ -14,6 +16,7 @@ SBUS RC(Serial2);
 void setupRC() {
 	Serial.println("Setup RC");
 	RC.begin();
+	Serial2.setRxInvert(INVERT_SERIAL);
 }
 
 void readRC() {
diff --git a/gazebo/Arduino.h b/gazebo/Arduino.h
index 9d35e6d..16e0808 100644
--- a/gazebo/Arduino.h
+++ b/gazebo/Arduino.h
@@ -122,6 +122,8 @@ public:
 		}
 		return -1;
 	}
+
+	void setRxInvert(bool invert) {};
 };
 
 HardwareSerial Serial, Serial2;