diff --git a/x-pack/plugins/alerting/server/routes/rule_types.test.ts b/x-pack/plugins/alerting/server/routes/rule_types.test.ts
index 0fa55d3ff048a..c52ce30e41dcd 100644
--- a/x-pack/plugins/alerting/server/routes/rule_types.test.ts
+++ b/x-pack/plugins/alerting/server/routes/rule_types.test.ts
@@ -65,7 +65,9 @@ describe('ruleTypesRoute', () => {
         validLegacyConsumers: [],
       } as RegistryAlertTypeWithAuth,
     ];
-    const expectedResult: Array<AsApiContract<RegistryAlertTypeWithAuth>> = [
+    const expectedResult: Array<
+      AsApiContract<Omit<RegistryAlertTypeWithAuth, 'validLegacyConsumers'>>
+    > = [
       {
         id: '1',
         name: 'name',
diff --git a/x-pack/plugins/alerting/server/routes/rule_types.ts b/x-pack/plugins/alerting/server/routes/rule_types.ts
index 68c19f0e1434a..4521bdfd167a2 100644
--- a/x-pack/plugins/alerting/server/routes/rule_types.ts
+++ b/x-pack/plugins/alerting/server/routes/rule_types.ts
@@ -29,7 +29,7 @@ const rewriteBodyRes = (results: RegistryAlertTypeWithAuth[]) => {
       hasFieldsForAAD,
       validLegacyConsumers,
       ...rest
-    }) => ({
+    }: RegistryAlertTypeWithAuth) => ({
       ...rest,
       enabled_in_license: enabledInLicense,
       recovery_action_group: recoveryActionGroup,