--- a/make/Docs.gmk	Fri Mar 01 11:40:46 2019 +0100
+++ b/make/Docs.gmk	Fri Mar 01 11:57:43 2019 +0100
@@ -1,4 +1,4 @@
-# Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -26,6 +26,7 @@
 
 include $(SPEC)
 include MakeBase.gmk
+include Execute.gmk
 include Modules.gmk
 include ModuleTools.gmk
 include ProcessMarkdown.gmk