diff --git a/src/haproxy.c b/src/haproxy.c
index 952733e..45ff0fc 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -2392,7 +2392,7 @@
 
 		/* expire immediately if events are pending */
 		exp = now_ms;
-		if (fd_cache_num)
+		if (fd_cache_mask & tid_bit)
 			activity[tid].wake_cache++;
 		else if (active_tasks_mask & tid_bit)
 			activity[tid].wake_tasks++;