diff --git a/doc/release-notes/12556-can-not-set-guestbook-with-id-over-127.md b/doc/release-notes/12556-can-not-set-guestbook-with-id-over-127.md
new file mode 100644
index 00000000000..694fc234cac
--- /dev/null
+++ b/doc/release-notes/12556-can-not-set-guestbook-with-id-over-127.md
@@ -0,0 +1,3 @@
+## Bug ##
+Fixed bug when calling PUT api/datasets/{datsetId}/guestbook body = {id over 127}. Values for Guestbook IDs over 127 are no longer failing.
+
diff --git a/src/main/java/edu/harvard/iq/dataverse/engine/command/impl/UpdateDatasetGuestbookCommand.java b/src/main/java/edu/harvard/iq/dataverse/engine/command/impl/UpdateDatasetGuestbookCommand.java
index 097c5312035..5e837c39174 100644
--- a/src/main/java/edu/harvard/iq/dataverse/engine/command/impl/UpdateDatasetGuestbookCommand.java
+++ b/src/main/java/edu/harvard/iq/dataverse/engine/command/impl/UpdateDatasetGuestbookCommand.java
@@ -32,7 +32,7 @@ public Dataset execute(CommandContext ctxt) throws CommandException {
             // Make sure the requested guestbook is available via the dataset's ancestry
             final List<Guestbook> guestbooks = dataset.getOwner().getAvailableGuestbooks();
             for (Guestbook gb : guestbooks) {
-                if (gb.getId() == guestbook.getId()) {
+                if (gb.getId().equals(guestbook.getId())) {
                     allowedGuestbook = gb;
                     break;
                 }