diff --git a/reg-tests/http-messaging/http_bodyless_response.vtc b/reg-tests/http-messaging/http_bodyless_response.vtc
index f45a7d6..6f36545 100644
--- a/reg-tests/http-messaging/http_bodyless_response.vtc
+++ b/reg-tests/http-messaging/http_bodyless_response.vtc
@@ -30,6 +30,12 @@
 } -repeat 2 -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         ${no-htx} option http-use-htx