diff --git a/tests/test_etcp_windows.c b/tests/test_etcp_windows.c
index 485f74f1..dec69cc3 100644
--- a/tests/test_etcp_windows.c
+++ b/tests/test_etcp_windows.c
@@ -855,7 +855,7 @@ static void send_queue_scan(void) {
 
     setup(); fill(a, 1, 100); fill(b, 1, 100);
     a->data_rtt_us = 10000; b->data_rtt_us = 20000;
-    conn->initialized = 0; test_clock_run_for(ua, 120); conn->initialized = 1;
+    conn->initialized = 0; test_clock_run_for(ua, 400); conn->initialized = 1;
     blocked = (struct INFLIGHT_PACKET*)queue_find_data_by_index(conn->input_send_q, &(uint32_t){1});
     struct INFLIGHT_PACKET* later = (struct INFLIGHT_PACKET*)queue_find_data_by_index(conn->input_send_q, &(uint32_t){2});
     CHECK(blocked && later && conn->input_send_q->head == &blocked->ll);