1 files changed, 5 insertions, 0 deletions
diff --git a/src/reel.h b/src/reel.h
index cc356b69..b4a69f78 100644
--- a/src/reel.h
+++ b/src/reel.h
@@ -17,6 +17,9 @@
 
 */
 
+#ifndef LIBDCP_REEL_H
+#define LIBDCP_REEL_H
+
 #include <list>
 #include <boost/shared_ptr.hpp>
 #include <boost/function.hpp>
@@ -75,3 +78,5 @@ private:
 };
 
 }
+
+#endif