diff --git a/doxygen/mbedtls.doxyfile b/doxygen/mbedtls.doxyfile
index 3170c80a8..2fc0b7f90 100644
--- a/doxygen/mbedtls.doxyfile
+++ b/doxygen/mbedtls.doxyfile
@@ -664,7 +664,7 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
-INPUT                  = include
+INPUT                  = .
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is