diff --git a/doc/Doxyfile.dox.cmake.in b/doc/Doxyfile.dox.cmake.in
index 3163f991..439e133d 100644
--- a/doc/Doxyfile.dox.cmake.in
+++ b/doc/Doxyfile.dox.cmake.in
@@ -47,7 +47,6 @@ IDL_PROPERTY_SUPPORT   = YES
 DISTRIBUTE_GROUP_DOC   = NO
 SUBGROUPING            = YES
 TYPEDEF_HIDES_STRUCT   = NO
-SYMBOL_CACHE_SIZE      = 0
 #---------------------------------------------------------------------------
 # Build related configuration options
 #---------------------------------------------------------------------------
@@ -79,7 +78,6 @@ GENERATE_DEPRECATEDLIST= YES
 ENABLED_SECTIONS       =
 MAX_INITIALIZER_LINES  = 30
 SHOW_USED_FILES        = YES
-SHOW_DIRECTORIES       = NO
 SHOW_FILES             = YES
 SHOW_NAMESPACES        = YES
 FILE_VERSION_FILTER    =
@@ -146,7 +144,6 @@ HTML_COLORSTYLE_HUE    = 220
 HTML_COLORSTYLE_SAT    = 100
 HTML_COLORSTYLE_GAMMA  = 80
 HTML_TIMESTAMP         = NO
-HTML_ALIGN_MEMBERS     = YES
 HTML_DYNAMIC_SECTIONS  = NO
 GENERATE_DOCSET        = NO
 DOCSET_FEEDNAME        = "Doxygen generated docs"
@@ -173,7 +170,6 @@ ECLIPSE_DOC_ID         = org.doxygen.Project
 DISABLE_INDEX          = NO
 ENUM_VALUES_PER_LINE   = 4
 GENERATE_TREEVIEW      = NO
-USE_INLINE_TREES       = NO
 TREEVIEW_WIDTH         = 250
 EXT_LINKS_IN_WINDOW    = NO
 FORMULA_FONTSIZE       = 10
@@ -217,8 +213,6 @@ MAN_LINKS              = NO
 #---------------------------------------------------------------------------
 GENERATE_XML           = NO
 XML_OUTPUT             = xml
-XML_SCHEMA             =
-XML_DTD                =
 XML_PROGRAMLISTING     = YES
 #---------------------------------------------------------------------------
 # configuration options for the AutoGen Definitions output