diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2af1e6f..a2c134c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ foreach(line ${CONFIGURE_AC_LINES})
 endforeach()
 set(VERSION "${LIBXML_MAJOR_VERSION}.${LIBXML_MINOR_VERSION}.${LIBXML_MICRO_VERSION}")
 
-project(libxml2 VERSION ${VERSION} LANGUAGES C)
+project(libxml2 VERSION ${VERSION} LANGUAGES C CXX)
 
 include(CheckCSourceCompiles)
 include(CheckFunctionExists)