diff --git a/libraries/render-utils/src/OffscreenUi.cpp b/libraries/render-utils/src/OffscreenUi.cpp
index 718a70f4e1..d0e54b08a9 100644
--- a/libraries/render-utils/src/OffscreenUi.cpp
+++ b/libraries/render-utils/src/OffscreenUi.cpp
@@ -1,3 +1,13 @@
+//
+//  OffscreenUi.cpp
+//  interface/src/render-utils
+//
+//  Created by Bradley Austin Davis on 2015-04-04
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
 #include "OffscreenUi.h"
 #include <QOpenGLFramebufferObject>
 #include <QOpenGLDebugLogger>
diff --git a/libraries/shared/src/ThreadHelpers.h b/libraries/shared/src/ThreadHelpers.h
index 862f7bf673..8a64691da7 100644
--- a/libraries/shared/src/ThreadHelpers.h
+++ b/libraries/shared/src/ThreadHelpers.h
@@ -1,5 +1,19 @@
+//
+//  ThreadHelpers.h
+//
+//  Created by Bradley Austin Davis on 2015-04-04
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
 #pragma once
+#ifndef hifi_ThreadHelpers_h
+#define hifi_ThreadHelpers_h
+
 #include <exception>
+#include <QMutex>
+#include <QMutexLocker>
 
 template <typename L, typename F>
 void withLock(L lock, F function) {
@@ -11,3 +25,5 @@ void withLock(QMutex & lock, F function) {
 	QMutexLocker locker(&lock);
 	function();
 }
+
+#endif
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