diff --git a/RingBuffer.h b/RingBuffer.h
index e4175d1..143864e 100644
--- a/RingBuffer.h
+++ b/RingBuffer.h
@@ -21,6 +21,7 @@
 #define RingBuffer_H
 
 #include <cassert>
+#include <cstring>
 
 #include "MutexLocker.h"