diff --git a/doc/doxygen/Doxyfile b/doc/doxygen/Doxyfile
index 93300605cb5d2b18d6d8a0fcfaf6c5c937278029..fbdbe172ce74837967bd68ba22da8aea57adb852 100644
--- a/doc/doxygen/Doxyfile
+++ b/doc/doxygen/Doxyfile
@@ -363,6 +363,7 @@ WARN_LOGFILE           =
 
 INPUT                  = mainpage \
                          ../../grid \
+                         ../../disc \
                          ../../fem \
                          ../../common \
                          ../../quadrature \