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-rw-r--r--src/gamma_lut.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gamma_lut.h b/src/gamma_lut.h
index dcecfc2d..c844de44 100644
--- a/src/gamma_lut.h
+++ b/src/gamma_lut.h
@@ -17,6 +17,9 @@
*/
+#ifndef LIBDCP_GAMMA_LUT_H
+#define LIBDCP_GAMMA_LUT_H
+
#include "lut.h"
#include "lut_cache.h"
@@ -30,3 +33,5 @@ public:
};
}
+
+#endif