diff --git a/README.md b/README.md
index dbcc001fa..7c7daac02 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,10 @@ pip install -r requirements.txt
 time make -j
 ```
 
-Intermediate products (compressed image files, for example) will be put into a build subdirectory; the font will be at the top level.
+Intermediate products (compressed image files, for example) will be put into a build subdirectory. Two fonts will be saved at the top level:
+
+* `NotoColorEmoji.ttf`, for general use.
+* `NotoColorEmoji_WindowsCompatible.ttf`, which is the same font but with an additional empty `glyf` table and `cmap` format 4 subtable. This is required by Windows 10 if you want to _install_ the font.
 
 ## Using NotoColorEmoji