diff --git a/src/open9x.cpp b/src/open9x.cpp
index 82f24ba5b..fbcaa135f 100644
--- a/src/open9x.cpp
+++ b/src/open9x.cpp
@@ -3441,6 +3441,10 @@ inline void open9xInit(OPEN9X_INIT_ARGS)
   s_current_protocol = PROTO_PPM;
 #endif
 
+#if !defined(CPUARM)
+  doMixerCalculations();
+#endif
+
   startPulses();
 
   wdt_enable(WDTO_500MS);
diff --git a/src/pulses_avr.cpp b/src/pulses_avr.cpp
index 152529325..d76f4335d 100644
--- a/src/pulses_avr.cpp
+++ b/src/pulses_avr.cpp
@@ -80,7 +80,6 @@ void startPulses()
   s_current_protocol = g_model.protocol;
 #else
   setupPulses();
-
 #endif // SIMU
 }