-AC_DEFINE_UNQUOTED([VERSION_NAME], [$version_name], [UST version name])
-AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], [$version_description], [UST version description])
+AC_DEFINE_UNQUOTED([VERSION_NAME], ["$version_name"], [UST version name])
+AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], ["$version_description"], [UST version description])