diff --git a/make/Init.gmk b/make/Init.gmk
index 1df133eeef0..5e5648741fe 100644
--- a/make/Init.gmk
+++ b/make/Init.gmk
@@ -1,3 +1,5 @@
+# now sneakily edit another build file
+
 #
 # Copyright (c) 2012, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
diff --git a/make/Main.gmk b/make/Main.gmk
index cdb4be67c56..9650a582a52 100644
--- a/make/Main.gmk
+++ b/make/Main.gmk
@@ -1,3 +1,4 @@
+# Now also change build system
 #
 # Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
diff --git a/src/hotspot/share/utilities/pair.hpp b/src/hotspot/share/utilities/pair.hpp
index 70c4359a2b1..4e5815ab0e9 100644
--- a/src/hotspot/share/utilities/pair.hpp
+++ b/src/hotspot/share/utilities/pair.hpp
@@ -1,3 +1,5 @@
+// I AM CHANGING HOTSPOT
+
 /*
  * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
diff --git a/src/java.desktop/share/classes/module-info.java b/src/java.desktop/share/classes/module-info.java
index 897647ee368..2fc9d02ab9d 100644
--- a/src/java.desktop/share/classes/module-info.java
+++ b/src/java.desktop/share/classes/module-info.java
@@ -1,3 +1,5 @@
+// edit client after label
+
 /*
  * Copyright (c) 2014, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.