diff --git a/Documentation/Doxyfile.in b/Documentation/Doxyfile.in
index f51adae76bdab1ac895056ac74a3d819166af6f2..b79c99eb15e90a1a1872c0596e0580f6798f8f16 100644
--- a/Documentation/Doxyfile.in
+++ b/Documentation/Doxyfile.in
@@ -752,15 +752,13 @@ INPUT                  = ${CMAKE_SOURCE_DIR}/Applications \
                          ${CMAKE_SOURCE_DIR}/Documentation \
                          ${CMAKE_SOURCE_DIR}/FileIO \
                          ${CMAKE_SOURCE_DIR}/GeoLib \
-                         ${CMAKE_SOURCE_DIR}/Gui \
                          ${CMAKE_SOURCE_DIR}/MathLib \
                          ${CMAKE_SOURCE_DIR}/MeshGeoToolsLib \
                          ${CMAKE_SOURCE_DIR}/MeshLib \
                          ${CMAKE_SOURCE_DIR}/NumLib \
                          ${CMAKE_SOURCE_DIR}/ProcessLib \
                          ${CMAKE_SOURCE_DIR}/README.md \
-                         ${CMAKE_SOURCE_DIR}/SimpleTests \
-                         ${CMAKE_SOURCE_DIR}/Utils
+                         ${CMAKE_SOURCE_DIR}/SimpleTests
 
 # 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