diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2dd224d12377..2dc99c48d198 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -62,6 +62,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Implemented workaround for NAG related to ArrayReference use in GriddedIO.
 - Implemented workarounds to avoid needing `-dusty` for NAG.  (Related PR in ESMA_CMake.)
 - Added constructor for DSO_SetServicesWrapper
+- Change macro in field/undo_function_overload.macro
 
 ## [Unreleased]
 
diff --git a/field/undo_function_overload.macro b/field/undo_function_overload.macro
index 2bb42fc3e1f0..deb52051a429 100644
--- a/field/undo_function_overload.macro
+++ b/field/undo_function_overload.macro
@@ -1,4 +1,4 @@
-#undef _FUNCN
+#undef _FUNC
 #undef _IDENTITY
 #undef _SUB
 #undef __SUB