diff --git a/radio/src/targets/simu/module_drivers.cpp b/radio/src/targets/simu/module_drivers.cpp
index 8c9cc6c4e..ec3bf5d96 100644
--- a/radio/src/targets/simu/module_drivers.cpp
+++ b/radio/src/targets/simu/module_drivers.cpp
@@ -38,14 +38,15 @@ void extmoduleStop() {}
 void extmoduleFifoError() {}
 void extmoduleFifoReceive(uint8_t){}
 
-void extmodulePpmStart() {}
+void extmodulePpmStart(unsigned short, bool) {}
 void extmoduleSerialStart() {}
 void extmodulePxx1SerialStart() {}
 void extmodulePxx1PulsesStart() {}
 void extmoduleSendInvertedByte(uint8_t) {}
 void extmoduleSendNextFramePxx1(void const*, unsigned short) {}
 void extmoduleSendNextFrameAFHDS3(void const*, unsigned short) {}
-void extmoduleSendNextFrameSoftSerial100kbit(void const*, unsigned short) {}
+void extmoduleSendNextFrameSoftSerial100kbit(void const*, unsigned short, bool) {}
+void extmoduleSendNextFramePpm(void*, unsigned short, unsigned short, bool) {}
 
 void init_trainer_ppm() {}
 void stop_trainer_ppm() {}