diff --git a/README.markdown b/README.markdown
index 84361b15..736f2f7c 100644
--- a/README.markdown
+++ b/README.markdown
@@ -101,7 +101,7 @@ FAQ
 
 __Q. I installed syntastic but it isn't reporting any errors ...__
 
-A. The most likely reason is that the syntax checker that it requires isn't installed. For example: python requires either `flake8`, `pyflakes` or `pylint` to be installed and in `$PATH`. To see which executable is required, just look in `syntax_checkers/<filetype>.vim`.
+A. The most likely reason is that the syntax checker that it requires isn't installed. For example: python requires either `flake8`, `pyflakes` or `pylint` to be installed and in `$PATH`. To see which executable is required, just look in `syntax_checkers/<filetype>.vim`.  Note that aliases do not work; the actual executable must be available in your `$PATH`.  Symbolic links are okay.
 
 Another reason it could fail is that the error output for the syntax checker may have changed. In this case, make sure you have the latest version of the syntax checker installed. If it still fails then create an issue - or better yet, create a pull request.