diff --git a/customized/include/curl_config_liteos_m.h b/customized/include/curl_config_liteos_m.h
index 35dc041ca066f39b08bb64b6d707c9730edc0b0a..8d9e06153844a6626814264e85e37739f3da1d3b 100644
--- a/customized/include/curl_config_liteos_m.h
+++ b/customized/include/curl_config_liteos_m.h
@@ -1043,7 +1043,7 @@
 /* #undef USE_SECTRANSP */
 
 /* if you want POSIX threaded DNS lookup */
-/* #undef USE_THREADS_POSIX */
+#define USE_THREADS_POSIX 1
 
 /* if you want Win32 threaded DNS lookup */
 /* #undef USE_THREADS_WIN32 */