diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/macros/AbstractGnuToolPrefixMacro.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/macros/AbstractGnuToolPrefixMacro.java
index 33105dc6879..2c36cbbbb89 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/macros/AbstractGnuToolPrefixMacro.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/macros/AbstractGnuToolPrefixMacro.java
@@ -1,3 +1,16 @@
+/*******************************************************************************
+ * Copyright (c) 2023 John Dallaway and others.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ * John Dallaway - Initial API and implementation (#361)
+ *******************************************************************************/
 package org.eclipse.cdt.managedbuilder.macros;
 
 import org.eclipse.cdt.core.cdtvariables.CdtVariableException;