diff --git a/Utilities/Doxygen/doxyfile.in b/Utilities/Doxygen/doxyfile.in
index 0e1f5fb56..05f9116ba 100644
--- a/Utilities/Doxygen/doxyfile.in
+++ b/Utilities/Doxygen/doxyfile.in
@@ -37,6 +37,11 @@ OUTPUT_DIRECTORY     = "@CMAKE_BINARY_DIR@/Utilities/Doxygen/doc"
 
 INPUT                = \
  "@CMAKE_SOURCE_DIR@/Source" \
+ "@CMAKE_SOURCE_DIR@/Source/CTest" \
+ "@CMAKE_SOURCE_DIR@/Source/CursesDialog" \
+ "@CMAKE_SOURCE_DIR@/Source/MFCDialog" \
+ "@CMAKE_SOURCE_DIR@/Source/WXDialog" \
+ "@CMAKE_SOURCE_DIR@/Source/kwsys" \
  "@CMAKE_BINARY_DIR@/Utilities/Doxygen/dox/doc_CMake_contributors.dox" \
 
 EXTRACT_ALL          = YES