diff --git a/src/clock.c b/src/clock.c
index ec2133c8b..7734389a7 100644
--- a/src/clock.c
+++ b/src/clock.c
@@ -135,7 +135,7 @@ uint64_t now_cpu_time_thread(int thr)
 /* set the clock source for the local thread */
 void clock_set_local_source(void)
 {
-#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
+#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME) && (_POSIX_THREAD_CPUTIME >= 0)
 #ifdef USE_THREAD
 	pthread_getcpuclockid(pthread_self(), &per_thread_clock_id[tid]);
 #else