1 files changed, 7 insertions, 4 deletions
diff --git a/source/blender/io/alembic/intern/abc_customdata.h b/source/blender/io/alembic/intern/abc_customdata.h
index 96b57b08681..8f4accb70dc 100644
--- a/source/blender/io/alembic/intern/abc_customdata.h
+++ b/source/blender/io/alembic/intern/abc_customdata.h
@@ -16,14 +16,12 @@
  * The Original Code is Copyright (C) 2016 Kévin Dietrich.
  * All rights reserved.
  */
+#pragma once
 
 /** \file
  * \ingroup balembic
  */
 
-#ifndef __ABC_CUSTOMDATA_H__
-#define __ABC_CUSTOMDATA_H__
-
 #include <Alembic/Abc/All.h>
 #include <Alembic/AbcGeom/All.h>
 
@@ -38,6 +36,9 @@ struct Mesh;
 
 using Alembic::Abc::ICompoundProperty;
 using Alembic::Abc::OCompoundProperty;
+namespace blender {
+namespace io {
+namespace alembic {
 
 struct UVSample {
   std::vector<Imath::V2f> uvs;
@@ -112,4 +113,6 @@ void read_custom_data(const std::string &iobject_full_name,
                       const CDStreamConfig &config,
                       const Alembic::Abc::ISampleSelector &iss);
 
-#endif /* __ABC_CUSTOMDATA_H__ */
+}  // namespace alembic
+}  // namespace io
+}  // namespace blender