diff --git a/doc/api/fs.markdown b/doc/api/fs.markdown
index d1e9f7eb3293c6..efa116b98a7c23 100644
--- a/doc/api/fs.markdown
+++ b/doc/api/fs.markdown
@@ -190,10 +190,11 @@ The times in the stat object have the following semantics:
 * `birthtime` "Birth Time" -  Time of file creation. Set once when the
   file is created.  On filesystems where birthtime is not available,
   this field may instead hold either the `ctime` or
-  `1970-01-01T00:00Z` (ie, unix epoch timestamp `0`).  On Darwin and
-  other FreeBSD variants, also set if the `atime` is explicitly set to
-  an earlier value than the current `birthtime` using the `utimes(2)`
-  system call.
+  `1970-01-01T00:00Z` (ie, unix epoch timestamp `0`). Note that this
+  value may be greater than `atime` or `mtime` in this case. On Darwin
+  and other FreeBSD variants, also set if the `atime` is explicitly
+  set to an earlier value than the current `birthtime` using the
+  `utimes(2)` system call.
 
 Prior to Node v0.12, the `ctime` held the `birthtime` on Windows
 systems.  Note that as of v0.12, `ctime` is not "creation time", and