diff --git a/Doxyfile b/Doxyfile
index c5f2d197..170e18a8 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -655,7 +655,7 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
-INPUT                  =
+INPUT                  = include src third_party/Csocket
 
 # 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