diff --git a/CMakeLists.txt b/CMakeLists.txt
index 77ae662..f50f16f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,7 +77,7 @@ set( CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--no-undefined"
 ##### directories
 
 add_subdirectory( src )
-tde_conditional_add_subdirectory( BUILD_DOC doc )
+tde_conditional_add_project_docs( BUILD_DOC )
 tde_conditional_add_subdirectory( BUILD_TRANSLATIONS po )
 
 
diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
deleted file mode 100644
index f6eec15..0000000
--- a/doc/CMakeLists.txt
+++ /dev/null
@@ -1,34 +0,0 @@
-file( GLOB _dirs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} * )
-list( REMOVE_ITEM _dirs html man )
-
-string( REGEX REPLACE "[ \r\n\t]+" ";" _linguas "$ENV{LINGUAS}" )
-
-foreach( _dir IN LISTS _dirs )
-  if( IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/${_dir}
-      AND ( "${_dir}" STREQUAL "en" OR
-            "${_linguas}" MATCHES "^;*$" OR
-            ";${_linguas};" MATCHES ";${_dir};" ))
-    file( GLOB _doc_files RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}/${_dir} ${_dir}/*.docbook )
-    if( _doc_files )
-      list( FIND _doc_files "index.docbook" _find_index )
-      if( -1 EQUAL _find_index )
-        set( _noindex "NOINDEX" )
-      else()
-        unset( _noindex )
-      endif()
-      tde_create_handbook(
-        SOURCE_BASEDIR ${_dir}
-        ${_noindex}
-        LANG ${_dir}
-        DESTINATION ${PROJECT_NAME}
-      )
-    endif()
-  endif()
-endforeach()
-
-if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/html/CMakeLists.txt )
-  add_subdirectory( html )
-endif()
-if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/man/CMakeLists.txt )
-  add_subdirectory( man )
-endif()