diff --git a/README.md b/README.md
index 9665766..427c04b 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ And the original video when PyCNC was just a prototype [YouTube video](https://y
 
 # Current gcode and features support
 * Commands G0, G1, G2, G3, G4, G17, G18, G19, G20, G21, G28, G53, G90, G91, G92,
-M2, M3, M5, M30, M84, M104, M105, M106, M107, M109, M114, M140, M190 are
+M2, M3, M5, M30, M84, M104, M105, M106, M107, M109, M114, M140, M190, M300 (connected to servo motor) are
 supported. Commands can be easily added, see [gmachine.py](./cnc/gmachine.py)
 file.
 * Four axis are supported - X, Y, Z, E.