diff --git a/FAQ.md b/FAQ.md
index e564a9f..7e3adca 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -6,6 +6,8 @@ Also, the older deprecated [vim-powerline][a] uses different font codes compared
 
 If you are using rxvt-unicode, try using an odd font size, 11, 13, 15 etc. in your .Xdefaults
 
+If you are using vim in the Terminal on OSX, check that the environment variables `LC_ALL` and `LANG` are set to a sensible value (such as en_US.UTF8). If `:echo encoding` does not show `utf8` there is a very good chance that these settings are not correct.
+
 #### The powerline font symbols are partially messed up
 
 You are likely using the [fontconfig](https://powerline.readthedocs.org/en/latest/installation/linux.html#font-installation) method.  If that is the case, you need to override the space character like so: