diff --git a/integrationtests/self/mitm_test.go b/integrationtests/self/mitm_test.go
index 0c594027..2358562a 100644
--- a/integrationtests/self/mitm_test.go
+++ b/integrationtests/self/mitm_test.go
@@ -253,8 +253,7 @@ var _ = Describe("MITM test", func() {
 					It("downloads a message when packet are corrupted towards the client", func() {
 						dropCb := func(dir quicproxy.Direction, raw []byte) bool {
 							defer GinkgoRecover()
-							isRetry := raw[0]&0xc0 == 0xc0 // don't corrupt Retry packets
-							if dir == quicproxy.DirectionOutgoing && mrand.Intn(interval) == 0 && !isRetry {
+							if dir == quicproxy.DirectionOutgoing && mrand.Intn(interval) == 0 {
 								pos := mrand.Intn(len(raw))
 								raw[pos] = byte(mrand.Intn(256))
 								_, err := serverConn.WriteTo(raw, clientConn.LocalAddr())