diff --git a/reg-tests/compression/etags_conversion.vtc b/reg-tests/compression/etags_conversion.vtc
index 0cae679..48e7955 100644
--- a/reg-tests/compression/etags_conversion.vtc
+++ b/reg-tests/compression/etags_conversion.vtc
@@ -106,6 +106,12 @@
 
 
 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
diff --git a/reg-tests/compression/vary.vtc b/reg-tests/compression/vary.vtc
index 0a060e4..a905f9c 100644
--- a/reg-tests/compression/vary.vtc
+++ b/reg-tests/compression/vary.vtc
@@ -61,6 +61,12 @@
 
 
 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