diff --git a/com.oracle.truffle.r.native/library/tools/src/gramRd_fastr.h b/com.oracle.truffle.r.native/library/tools/src/gramRd_fastr.h
index 9a24cdf2bd15873b395e078951e793bfcd659f37..484c68e964e8149684afcc5604cf32b636fe23fe 100644
--- a/com.oracle.truffle.r.native/library/tools/src/gramRd_fastr.h
+++ b/com.oracle.truffle.r.native/library/tools/src/gramRd_fastr.h
@@ -1,3 +1,25 @@
+/*
+ * Copyright (c) 2016, 2016, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
 #ifndef GRAMRD_FASTR_H
 #define GRAMRD_FASTR_H
 
diff --git a/com.oracle.truffle.r.native/library/tools/src/gramRd_jni.c b/com.oracle.truffle.r.native/library/tools/src/gramRd_jni.c
index 72a695e0130f2496c3062656207c696bd8189e09..c109bff1be15b1e26777045b48b43e0f87bc186f 100644
--- a/com.oracle.truffle.r.native/library/tools/src/gramRd_jni.c
+++ b/com.oracle.truffle.r.native/library/tools/src/gramRd_jni.c
@@ -1,3 +1,25 @@
+/*
+ * Copyright (c) 2016, 2016, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
 #include "gramRd_fastr.h"
 #include <jni.h>