diff --git a/companion/src/firmwares/opentx/opentxSky9xsimulator.cpp b/companion/src/firmwares/opentx/opentxSky9xsimulator.cpp
index 2bbb4c669..e95fd3830 100644
--- a/companion/src/firmwares/opentx/opentxSky9xsimulator.cpp
+++ b/companion/src/firmwares/opentx/opentxSky9xsimulator.cpp
@@ -109,6 +109,7 @@ namespace Open9xSky9x {
 #include "radio/src/targets/sky9x/sdcard_driver.cpp"
 #include "radio/src/targets/sky9x/coproc_driver.cpp"
 #include "radio/src/targets/sky9x/haptic_driver.cpp"
+#include "radio/src/targets/sky9x/second_serial_driver.cpp"
 #include "radio/src/haptic.cpp"
 #include "radio/src/translations/tts_cz.cpp"
 #include "radio/src/translations/tts_de.cpp"
diff --git a/radio/src/targets/sky9x/second_serial_driver.cpp b/radio/src/targets/sky9x/second_serial_driver.cpp
index 1eb050592..3066178f3 100644
--- a/radio/src/targets/sky9x/second_serial_driver.cpp
+++ b/radio/src/targets/sky9x/second_serial_driver.cpp
@@ -34,7 +34,7 @@
  *
  */
 
-#include "../opentx.h"
+#include "../../opentx.h"
 #include <stdarg.h>
 
 /** Usart Hw interface used by the console (UART0). */