diff --git a/src/accounting/static/js/transaction-form.js b/src/accounting/static/js/transaction-form.js
index 025f734..e79af58 100644
--- a/src/accounting/static/js/transaction-form.js
+++ b/src/accounting/static/js/transaction-form.js
@@ -502,6 +502,7 @@ class DebitCreditSideSubForm {
         this.#entries.push(entry);
         this.#resetDeleteJournalEntryButtons();
         this.#initializeDragAndDropReordering();
+        this.validate();
         return entry;
     }