1 files changed, 3 insertions, 2 deletions
diff --git a/Swiften/StreamStack/WhitespacePingLayer.h b/Swiften/StreamStack/WhitespacePingLayer.h
index 18d13d1..17b0654 100644
--- a/Swiften/StreamStack/WhitespacePingLayer.h
+++ b/Swiften/StreamStack/WhitespacePingLayer.h
@@ -1,24 +1,25 @@
 /*
- * Copyright (c) 2010 Isode Limited.
+ * Copyright (c) 2010-2015 Isode Limited.
  * All rights reserved.
  * See the COPYING file for more information.
  */
 
 #pragma once
 
 #include <boost/noncopyable.hpp>
 #include <boost/shared_ptr.hpp>
 
+#include <Swiften/Base/API.h>
 #include <Swiften/StreamStack/StreamLayer.h>
 
 namespace Swift {
 	class Timer;
 	class TimerFactory;
 
-	class WhitespacePingLayer : public StreamLayer, boost::noncopyable {
+	class SWIFTEN_API WhitespacePingLayer : public StreamLayer, boost::noncopyable {
 		public:
 			WhitespacePingLayer(TimerFactory* timerFactory);
 
 			void setActive();
 			void setInactive();
 			void writeData(const SafeByteArray& data);