diff --git a/src/haproxy.c b/src/haproxy.c
index fb85cf442..90db4e798 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -3087,7 +3087,7 @@ void run_poll_loop()
 			if (thread_has_tasks()) {
 				activity[tid].wake_tasks++;
 				_HA_ATOMIC_AND(&th_ctx->flags, ~TH_FL_SLEEPING);
-			} else if (signal_queue_len) {
+			} else if (signal_queue_len && tid == 0) {
 				/* this check is required after setting TH_FL_SLEEPING to avoid
 				 * a race with wakeup on signals using wake_threads() */
 				_HA_ATOMIC_AND(&th_ctx->flags, ~TH_FL_SLEEPING);