diff --git a/reg-tests/converter/iif.vtc b/reg-tests/converter/iif.vtc
index 22414e0..3a6d6a6 100644
--- a/reg-tests/converter/iif.vtc
+++ b/reg-tests/converter/iif.vtc
@@ -5,7 +5,7 @@
 
 server s1 {
 	rxreq
-	txresp
+	txresp -hdr "Connection: close"
 } -repeat 3 -start
 
 haproxy h1 -conf {