diff --git a/packages/data-schemas/src/utils/transactions.spec.ts b/packages/data-schemas/src/utils/transactions.spec.ts
new file mode 100644
index 0000000000..7013bd2a45
--- /dev/null
+++ b/packages/data-schemas/src/utils/transactions.spec.ts
@@ -0,0 +1,11 @@
+import { getTransactionSupport } from './transactions';
+
+describe('getTransactionSupport', () => {
+  // The cache-hit path does not touch the database, so a stub mongoose is fine.
+  const mongoose = {} as unknown as typeof import('mongoose');
+
+  it('returns the cached value on a cache hit (does not re-probe)', async () => {
+    await expect(getTransactionSupport(mongoose, true)).resolves.toBe(true);
+    await expect(getTransactionSupport(mongoose, false)).resolves.toBe(false);
+  });
+});
diff --git a/packages/data-schemas/src/utils/transactions.ts b/packages/data-schemas/src/utils/transactions.ts
index b54447ffbf..799a74e936 100644
--- a/packages/data-schemas/src/utils/transactions.ts
+++ b/packages/data-schemas/src/utils/transactions.ts
@@ -55,9 +55,8 @@ export const getTransactionSupport = async (
   mongoose: typeof import('mongoose'),
   transactionSupportCache: boolean | null,
 ): Promise<boolean> => {
-  let transactionsSupported = false;
-  if (transactionSupportCache === null) {
-    transactionsSupported = await supportsTransactions(mongoose);
+  if (transactionSupportCache !== null) {
+    return transactionSupportCache;
   }
-  return transactionsSupported;
+  return await supportsTransactions(mongoose);
 };