diff --git a/CMakeLists.txt b/CMakeLists.txt
index 668d7836..9745fb56 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,10 +23,8 @@ include(FindPkgConfig)
 include(GNUInstallDirs)
 
 option(BUILD_SHARED_LIBS "Build shared libraries" ON)
-set(LIBXML2_WITH_AUTOMATA ON)
 option(LIBXML2_WITH_CATALOG "Add the Catalog support" ON)
 option(LIBXML2_WITH_DEBUG "Add the debugging module" ON)
-set(LIBXML2_WITH_EXPR ON)
 option(LIBXML2_WITH_HTML "Add the HTML support" ON)
 option(LIBXML2_WITH_HTTP "Add the HTTP support" OFF)
 option(LIBXML2_WITH_ICONV "Add ICONV support" ON)
@@ -46,7 +44,6 @@ option(LIBXML2_WITH_SAX1 "Add the older SAX1 interface" ON)
 option(LIBXML2_WITH_TESTS "Build tests" ON)
 option(LIBXML2_WITH_THREADS "Add multithread support" ON)
 option(LIBXML2_WITH_TLS "Enable thread-local storage" OFF)
-set(LIBXML2_WITH_UNICODE ON)
 option(LIBXML2_WITH_VALID "Add the DTD validation support" ON)
 option(LIBXML2_WITH_XPATH "Add the XPATH support" ON)
 option(LIBXML2_WITH_ZLIB "Use libz" OFF)
@@ -88,7 +85,7 @@ if(LIBXML2_WITH_PYTHON)
         CACHE PATH "Python bindings install directory")
 endif()
 
-foreach(VARIABLE IN ITEMS WITH_AUTOMATA WITH_C14N WITH_CATALOG WITH_DEBUG WITH_EXPR WITH_HTML WITH_HTTP WITH_ICONV WITH_ICU WITH_ISO8859X WITH_LEGACY WITH_LZMA WITH_MODULES WITH_OUTPUT WITH_PATTERN WITH_PUSH WITH_READER WITH_REGEXPS WITH_SAX1 WITH_SCHEMAS WITH_SCHEMATRON WITH_THREADS WITH_THREAD_ALLOC WITH_UNICODE WITH_VALID WITH_WRITER WITH_XINCLUDE WITH_XPATH WITH_XPTR WITH_ZLIB)
+foreach(VARIABLE IN ITEMS WITH_C14N WITH_CATALOG WITH_DEBUG WITH_HTML WITH_HTTP WITH_ICONV WITH_ICU WITH_ISO8859X WITH_LEGACY WITH_LZMA WITH_MODULES WITH_OUTPUT WITH_PATTERN WITH_PUSH WITH_READER WITH_REGEXPS WITH_SAX1 WITH_SCHEMAS WITH_SCHEMATRON WITH_THREADS WITH_THREAD_ALLOC WITH_VALID WITH_WRITER WITH_XINCLUDE WITH_XPATH WITH_XPTR WITH_ZLIB)
     if(LIBXML2_${VARIABLE})
         set(${VARIABLE} 1)
     else()