diff --git a/node/capsule/src/main/resources/compile-commands.txt b/node/capsule/src/main/resources/compile-commands.txt
new file mode 100644
index 0000000000..355bb6110b
--- /dev/null
+++ b/node/capsule/src/main/resources/compile-commands.txt
@@ -0,0 +1,2 @@
+quiet
+exclude sandbox/*.*
diff --git a/node/djvm/src/main/kotlin/net/corda/node/djvm/AttachmentBuilder.kt b/node/djvm/src/main/kotlin/net/corda/node/djvm/AttachmentBuilder.kt
index e91d50a759..956180349c 100644
--- a/node/djvm/src/main/kotlin/net/corda/node/djvm/AttachmentBuilder.kt
+++ b/node/djvm/src/main/kotlin/net/corda/node/djvm/AttachmentBuilder.kt
@@ -12,7 +12,7 @@ class AttachmentBuilder : Function<Array<Any>?, List<Attachment>?> {
     private val attachments = mutableListOf<Attachment>()
 
     private fun <T> unmodifiable(list: List<T>): List<T> {
-        return if(list.isEmpty()) {
+        return if (list.isEmpty()) {
             emptyList()
         } else {
             unmodifiableList(list)
@@ -25,11 +25,11 @@ class AttachmentBuilder : Function<Array<Any>?, List<Attachment>?> {
         } else {
             @Suppress("unchecked_cast")
             attachments.add(SandboxAttachment(
-                    signerKeys = inputs[0] as List<PublicKey>,
-                    size = inputs[1] as Int,
-                    id = inputs[2] as SecureHash,
-                    attachment = inputs[3],
-                    streamer = inputs[4] as Function<in Any, out InputStream>
+                signerKeys = inputs[0] as List<PublicKey>,
+                size = inputs[1] as Int,
+                id = inputs[2] as SecureHash,
+                attachment = inputs[3],
+                streamer = inputs[4] as Function<in Any, out InputStream>
             ))
             null
         }
diff --git a/node/djvm/src/main/kotlin/net/corda/node/djvm/ComponentBuilder.kt b/node/djvm/src/main/kotlin/net/corda/node/djvm/ComponentBuilder.kt
index d5c73b15ea..919d50f989 100644
--- a/node/djvm/src/main/kotlin/net/corda/node/djvm/ComponentBuilder.kt
+++ b/node/djvm/src/main/kotlin/net/corda/node/djvm/ComponentBuilder.kt
@@ -11,7 +11,7 @@ class ComponentBuilder : Function<Array<Any?>, List<*>> {
     override fun apply(inputs: Array<Any?>): List<*> {
         val deserializer = inputs[0] as Function<in Any?, out Any?>
         val groupType = inputs[1] as ComponentGroupEnum
-        val components = (inputs[2] as Array<ByteArray>).map { OpaqueBytes(it) }
+        val components = (inputs[2] as Array<ByteArray>).map(::OpaqueBytes)
 
         return components.lazyMapped { component, index ->
             try {