diff --git a/Doxyfile b/Doxyfile
index 071110099373bf500cc4a94fd6be5183336c7865..10040ece70cd320944009390bcedf9c4e59e417a 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -864,7 +864,8 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = src
+INPUT                  = src \
+                         include
 
 # 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