diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9486d0ec9..b18ec1666 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - Upgrade `actix-cors` to v0.7.0
   - Increase size of URL columns in locations component
 
+### Fixed
+  - [531](https://github.com/thoth-pub/thoth/pull/531) - Fix bug where New Publication form for Chapter could have an ISBN pre-populated but greyed out
+
 ## [[0.11.12]](https://github.com/thoth-pub/thoth/releases/tag/v0.11.12) - 2023-12-20
 ### Fixed
   - [530](https://github.com/thoth-pub/thoth/pull/530) - Fix pagination offset calculation in export API
diff --git a/thoth-app/src/component/publication_modal.rs b/thoth-app/src/component/publication_modal.rs
index f1e99a1f3..a25d64ba2 100644
--- a/thoth-app/src/component/publication_modal.rs
+++ b/thoth-app/src/component/publication_modal.rs
@@ -140,6 +140,11 @@ impl Component for PublicationModalComponent {
                     if let Some(publication) = ctx.props().publication_under_edit.clone() {
                         // Editing existing publication: load its current values.
                         self.publication = publication;
+                    } else {
+                        // Previous values will be retained if creating new publication, which may be
+                        // useful for batch-adding, but this is less likely for ISBNs (and they also
+                        // cannot be added for publications whose work type is Book Chapter).
+                        self.publication.isbn = None;
                     }
                     // Ensure ISBN variable value is kept in sync with publication object.
                     self.isbn = self