diff --git a/doxygen/Doxyfile b/doxygen/Doxyfile
index 064ced94d988ffc3424b71c1da9572582860fa4c..d44e235b5f4b0830b6192bf3a849dd8956b63f5b 100644
--- a/doxygen/Doxyfile
+++ b/doxygen/Doxyfile
@@ -45,7 +45,6 @@ IDL_PROPERTY_SUPPORT   = YES
 DISTRIBUTE_GROUP_DOC   = NO
 SUBGROUPING            = YES
 TYPEDEF_HIDES_STRUCT   = NO
-SYMBOL_CACHE_SIZE      = 0
 #---------------------------------------------------------------------------
 # Build related configuration options
 #---------------------------------------------------------------------------
@@ -75,7 +74,6 @@ 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    = 
@@ -130,7 +128,6 @@ IGNORE_PREFIX          =
 GENERATE_HTML          = YES
 HTML_OUTPUT            = html
 HTML_FILE_EXTENSION    = .html
-HTML_ALIGN_MEMBERS     = YES
 HTML_DYNAMIC_SECTIONS  = YES
 GENERATE_DOCSET        = NO
 DOCSET_FEEDNAME        = "Doxygen generated docs"