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-rw-r--r--src/atmos_asset_writer.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/atmos_asset_writer.h b/src/atmos_asset_writer.h
index 57059606..c78174f1 100644
--- a/src/atmos_asset_writer.h
+++ b/src/atmos_asset_writer.h
@@ -31,6 +31,9 @@
files in the program, then also delete it here.
*/
+#ifndef LIBDCP_ATMOS_ASSET_WRITER_H
+#define LIBDCP_ATMOS_ASSET_WRITER_H
+
/** @file src/atmos_asset_writer.h
* @brief AtmosAssetWriter class.
*/
@@ -72,3 +75,5 @@ private:
};
}
+
+#endif