diff --git a/node/src/test/kotlin/net/corda/node/internal/NodeTest.kt b/node/src/test/kotlin/net/corda/node/internal/NodeTest.kt
index e47ab67a0d..a480d7e966 100644
--- a/node/src/test/kotlin/net/corda/node/internal/NodeTest.kt
+++ b/node/src/test/kotlin/net/corda/node/internal/NodeTest.kt
@@ -52,6 +52,7 @@ class NodeTest {
         val dataSourceProperties = makeTestDataSourceProperties()
         val databaseConfig = DatabaseConfig()
         val configuration = rigorousMock<AbstractNodeConfiguration>().also {
+            doReturn(null).whenever(it).relay
             doReturn(nodeAddress).whenever(it).p2pAddress
             doReturn(nodeName).whenever(it).myLegalName
             doReturn(null).whenever(it).notary // Don't add notary identity.