diff --git a/tinyusb.Doxyfile b/tinyusb.Doxyfile
index 5bf2aa813..5f92c1cee 100644
--- a/tinyusb.Doxyfile
+++ b/tinyusb.Doxyfile
@@ -746,7 +746,8 @@ WARN_LOGFILE           =
 INPUT                  = tinyusb/doxygen/group_def.txt \
                          readme.md \
                          tinyusb \
-                         boards
+                         boards \
+                         tests/readme.markdown
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses