diff --git a/docs/KNOWN_BUGS b/docs/KNOWN_BUGS
index ae109708249dc495bcdeaea12a7103005f4acf81..8c175a1fedaab2d5f27e42bbec697b67724c4832 100644
--- a/docs/KNOWN_BUGS
+++ b/docs/KNOWN_BUGS
@@ -3,6 +3,11 @@ join in and help us correct one or more of these! Also be sure to check the
 changelog of the current development status, as one or more of these problems
 may have been fixed since this was written!
 
+41. When doing an operation over FTP that requires the ACCT command (but not
+  when logging in), the operation will fail since libcurl does detect this and
+  thus fails to issue the correct command:
+  http://curl.haxx.se/bug/view.cgi?id=1693337
+
 40. Mac OS X test failures (Daniel Johnson)
   http://curl.haxx.se/mail/lib-2007-03/0095.html