diff --git a/winsup/cygwin/release/3.1.0 b/winsup/cygwin/release/3.1.0
index 03bbc7aba..7f88c53fd 100644
--- a/winsup/cygwin/release/3.1.0
+++ b/winsup/cygwin/release/3.1.0
@@ -82,3 +82,6 @@ Bug Fixes
 
 - Make rmdir fail if its argument is a symlink.
   Addresses: https://cygwin.com/ml/cygwin/2019-09/msg00221.html
+
+- Fix an assertion failure on an invalid path.
+  Addresses: https://cygwin.com/ml/cygwin/2019-09/msg00228.html