diff --git a/main-command/src/main/scala/sbt/internal/classpath/ClassLoaderCache.scala b/main-command/src/main/scala/sbt/internal/classpath/ClassLoaderCache.scala
index 21ee2b10d..dee8e88c4 100644
--- a/main-command/src/main/scala/sbt/internal/classpath/ClassLoaderCache.scala
+++ b/main-command/src/main/scala/sbt/internal/classpath/ClassLoaderCache.scala
@@ -1,3 +1,10 @@
+/*
+ * sbt
+ * Copyright 2011 - 2018, Lightbend, Inc.
+ * Copyright 2008 - 2010, Mark Harrah
+ * Licensed under Apache License 2.0 (see LICENSE)
+ */
+
 package sbt.internal.classpath
 
 import java.io.File
diff --git a/main/src/main/scala/sbt/internal/XMainConfiguration.scala b/main/src/main/scala/sbt/internal/XMainConfiguration.scala
index f35952d89..e0a6482e8 100644
--- a/main/src/main/scala/sbt/internal/XMainConfiguration.scala
+++ b/main/src/main/scala/sbt/internal/XMainConfiguration.scala
@@ -1,3 +1,10 @@
+/*
+ * sbt
+ * Copyright 2011 - 2018, Lightbend, Inc.
+ * Copyright 2008 - 2010, Mark Harrah
+ * Licensed under Apache License 2.0 (see LICENSE)
+ */
+
 package sbt.internal
 
 import java.io.File