diff --git a/source/blender/makesdna/DNA_array_utils.hh b/source/blender/makesdna/DNA_array_utils.hh
index c0f3a8ba3e1..fbe9b7dd3ca 100644
--- a/source/blender/makesdna/DNA_array_utils.hh
+++ b/source/blender/makesdna/DNA_array_utils.hh
@@ -10,6 +10,8 @@
  * However, semantically, these types may have non-trivial copy-constructors and destructors.
  */
 
+#pragma once
+
 #include "MEM_guardedalloc.h"
 
 #include "BLI_function_ref.hh"