diff --git a/evidence/reactor_test.go b/evidence/reactor_test.go
index a2d82bf71..0d7d1110d 100644
--- a/evidence/reactor_test.go
+++ b/evidence/reactor_test.go
@@ -208,7 +208,10 @@ func TestReactorBroadcastEvidenceMemoryLeak(t *testing.T) {
 	// i.e. broadcastEvidenceRoutine finishes when peer is stopped
 	defer leaktest.CheckTimeout(t, 10*time.Second)()
 
-	p.On("Send", evidence.EvidenceChannel, mock.AnythingOfType("[]uint8")).Return(false)
+	p.On("Send", mock.MatchedBy(func(i interface{}) bool {
+		e, ok := i.(p2p.Envelope)
+		return ok && e.ChannelID == evidence.EvidenceChannel
+	})).Return(false)
 	quitChan := make(<-chan struct{})
 	p.On("Quit").Return(quitChan)
 	ps := peerState{2}