diff --git a/docs/MixerProfile.md b/docs/MixerProfile.md
index 55aedd3a30b..cd9702b5a32 100644
--- a/docs/MixerProfile.md
+++ b/docs/MixerProfile.md
@@ -41,6 +41,8 @@ The default `mmix` throttle value is 0.0, It will not show in `diff` command whe
 - -1.0<throttle<=0.0 : motor stop, default value 0, set to -1 to use a place holder for subsequent motor rules
 - -2.0<throttle<-1.0 : spin regardless of throttle position at speed `abs(throttle)-1` when Mixer Transition is activated.
 
+Airmode type should be set to "STICK_CENTER". Airmode type must NOT be set to "THROTTLE_THRESHOLD". If set to throttle threshold the (-) motor will spin till throttle threshold is passed. 
+
 Example: This will spin motor number 5 (counting from 1) at 20%, in transition mode only, to gain speed for a "4 rotor 1 pusher" setup:
 
 ```