diff --git a/README.md b/README.md
index c217b545..28d5b7b1 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@
 
 1. [Features](#features)
 1. [Non-features](#non-features)
+1. [What does not work?](#what-does-not-work)
 1. [Fonts](#fonts)
 1. [Shortcuts](#shortcuts)
    1. [Keyboard](#keyboard)
@@ -38,6 +39,14 @@ ever be supported by foot.
 * Multiple windows
 
 
+## What does not work?
+
+This is a list of known, but probably not all, issues:
+
+* Unicode combining characters
+  Examples: á, 👪🏼
+
+
 ## Fonts
 
 **foot** supports all fonts that can be loaded by _freetype_,