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-rw-r--r--src/encrypted_kdm.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/encrypted_kdm.h b/src/encrypted_kdm.h
index 0aa36a15..41231c2e 100644
--- a/src/encrypted_kdm.h
+++ b/src/encrypted_kdm.h
@@ -21,6 +21,9 @@
* @brief EncryptedKDM class.
*/
+#ifndef LIBDCP_ENCRYPTED_KDM_H
+#define LIBDCP_ENCRYPTED_KDM_H
+
#include "local_time.h"
#include <boost/filesystem.hpp>
#include <boost/date_time/local_time/local_time.hpp>
@@ -92,3 +95,5 @@ private:
};
}
+
+#endif