diff --git a/source/blender/blenlib/BLI_parameter_pack_utils.hh b/source/blender/blenlib/BLI_parameter_pack_utils.hh
index fd3a4555e74..fa4649813c1 100644
--- a/source/blender/blenlib/BLI_parameter_pack_utils.hh
+++ b/source/blender/blenlib/BLI_parameter_pack_utils.hh
@@ -11,6 +11,7 @@
  * This file has some utilities to work with such parameter packs.
  */
 
+#include <cstddef>
 #include <tuple>
 #include <type_traits>