diff --git a/nt/mingw-cfg.site b/nt/mingw-cfg.site
index ff9df60c275..9d630087974 100644
--- a/nt/mingw-cfg.site
+++ b/nt/mingw-cfg.site
@@ -40,6 +40,12 @@ gl_cv_sys_struct_timespec_in_pthread_h=no
 # Or at all...
 ac_cv_header_pthread_h=no
 
+# We don't want to check for these functions
+# because they are implemented in libwinpthread.
+ac_cv_search_clock_gettime="none required"
+ac_cv_func_clock_gettime=no
+ac_cv_func_clock_settime=no
+
 # ACL functions are implemented in w32.c
 ac_cv_search_acl_get_file="none required"
 ac_cv_func_acl_get_file=yes