diff --git a/libraries/AP_Motors/examples/AP_Motors_test/AP_Motors_test.cpp b/libraries/AP_Motors/examples/AP_Motors_test/AP_Motors_test.cpp
index 1018e83761..6001be96dd 100644
--- a/libraries/AP_Motors/examples/AP_Motors_test/AP_Motors_test.cpp
+++ b/libraries/AP_Motors/examples/AP_Motors_test/AP_Motors_test.cpp
@@ -54,6 +54,8 @@ AP_MotorsQuad   motors(400);
 //AP_MotorsOcta	motors(400);
 //AP_MotorsOctaQuad	motors(400);
 //AP_MotorsHeli_Single motors(rc7, rsc, h1, h2, h3, h4, 400);
+//AP_MotorsSingle motors(400);
+//AP_MotorsCoax motors(400);
 
 // setup
 void setup()