diff --git a/docs/users.rst b/docs/users.rst
index 3a62dd4b..325945cf 100644
--- a/docs/users.rst
+++ b/docs/users.rst
@@ -187,3 +187,5 @@ Limitations
 27. mlockall() is not supported and returns -EPERM.
 
 28. munlockall() is not supported and returns zero.
+
+29. scheduling behavior is not Linux compatible. For example, sometimes one of the two processes on the same CPU continues to run after yielding.