diff --git a/Doxyfile b/Doxyfile
index c94e2aa5e..a805d45fb 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -514,6 +514,7 @@ WARN_LOGFILE           =
 # with spaces.
 
 INPUT                  = FL \
+                         src \
                          documentation
 
 # This tag can be used to specify the character encoding of the source files