diff --git a/core/src/main/kotlin/net/corda/core/crypto/CryptoUtilities.kt b/core/src/main/kotlin/net/corda/core/crypto/CryptoUtilities.kt
index fbac29d28e..17d438b75c 100644
--- a/core/src/main/kotlin/net/corda/core/crypto/CryptoUtilities.kt
+++ b/core/src/main/kotlin/net/corda/core/crypto/CryptoUtilities.kt
@@ -1,3 +1,5 @@
+@file:JvmName("CryptoUtilities")
+
 package net.corda.core.crypto
 
 import net.corda.core.serialization.OpaqueBytes
diff --git a/node/src/main/kotlin/net/corda/node/driver/Driver.kt b/node/src/main/kotlin/net/corda/node/driver/Driver.kt
index d816227be3..437a5b159c 100644
--- a/node/src/main/kotlin/net/corda/node/driver/Driver.kt
+++ b/node/src/main/kotlin/net/corda/node/driver/Driver.kt
@@ -1,3 +1,5 @@
+@file:JvmName("Driver")
+
 package net.corda.node.driver
 
 import com.fasterxml.jackson.databind.ObjectMapper
diff --git a/node/src/main/kotlin/net/corda/node/services/config/ConfigUtilities.kt b/node/src/main/kotlin/net/corda/node/services/config/ConfigUtilities.kt
index 147713f4ef..41e3bdaa1a 100644
--- a/node/src/main/kotlin/net/corda/node/services/config/ConfigUtilities.kt
+++ b/node/src/main/kotlin/net/corda/node/services/config/ConfigUtilities.kt
@@ -1,3 +1,5 @@
+@file:JvmName("ConfigUtilities")
+
 package net.corda.node.services.config
 
 import com.google.common.net.HostAndPort