diff --git a/doc/Doxyfile b/doc/Doxyfile
index 2bcae45..2aea847 100644
--- a/doc/Doxyfile
+++ b/doc/Doxyfile
@@ -619,7 +619,8 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories 
 # with spaces.
 
-INPUT                  = ../
+INPUT                  = ../ \
+                         ../src
 
 # 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