diff --git a/reg-tests/converter/json_query.vtc b/reg-tests/converter/json_query.vtc
index ade7b4c..b420942 100644
--- a/reg-tests/converter/json_query.vtc
+++ b/reg-tests/converter/json_query.vtc
@@ -9,6 +9,12 @@
 } -repeat 8 -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
 	timeout connect 1s
diff --git a/reg-tests/converter/secure_memcmp.vtc b/reg-tests/converter/secure_memcmp.vtc
index f9341f9..b16e021 100644
--- a/reg-tests/converter/secure_memcmp.vtc
+++ b/reg-tests/converter/secure_memcmp.vtc
@@ -16,6 +16,12 @@
 } -repeat 7 -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
 	timeout connect 1s