diff --git a/src/core/server/ui_settings/routes/delete.ts b/src/core/server/ui_settings/routes/delete.ts
index eb3d167edfd5..52888fa6f398 100644
--- a/src/core/server/ui_settings/routes/delete.ts
+++ b/src/core/server/ui_settings/routes/delete.ts
@@ -39,11 +39,14 @@ const validate = {
   params: schema.object({
     key: schema.string(),
   }),
-  query: schema.object({
-    scope: schema.maybe(
-      schema.oneOf([schema.literal(UiSettingScope.GLOBAL), schema.literal(UiSettingScope.USER)])
-    ),
-  }),
+  query: schema.object(
+    {
+      scope: schema.maybe(
+        schema.oneOf([schema.literal(UiSettingScope.GLOBAL), schema.literal(UiSettingScope.USER)])
+      ),
+    },
+    { unknowns: 'allow' }
+  ),
 };
 
 export function registerDeleteRoute(router: IRouter) {
diff --git a/src/core/server/ui_settings/routes/get.ts b/src/core/server/ui_settings/routes/get.ts
index 5d4571f93a1a..21c995d11b91 100644
--- a/src/core/server/ui_settings/routes/get.ts
+++ b/src/core/server/ui_settings/routes/get.ts
@@ -35,11 +35,14 @@ import { SavedObjectsErrorHelpers } from '../../saved_objects';
 import { UiSettingScope } from '../types';
 
 const validate = {
-  query: schema.object({
-    scope: schema.maybe(
-      schema.oneOf([schema.literal(UiSettingScope.GLOBAL), schema.literal(UiSettingScope.USER)])
-    ),
-  }),
+  query: schema.object(
+    {
+      scope: schema.maybe(
+        schema.oneOf([schema.literal(UiSettingScope.GLOBAL), schema.literal(UiSettingScope.USER)])
+      ),
+    },
+    { unknowns: 'allow' }
+  ),
 };
 
 export function registerGetRoute(router: IRouter) {
diff --git a/src/core/server/ui_settings/routes/set.ts b/src/core/server/ui_settings/routes/set.ts
index abf49f4218e3..4da4d244e329 100644
--- a/src/core/server/ui_settings/routes/set.ts
+++ b/src/core/server/ui_settings/routes/set.ts
@@ -42,11 +42,14 @@ const validate = {
   body: schema.object({
     value: schema.any(),
   }),
-  query: schema.object({
-    scope: schema.maybe(
-      schema.oneOf([schema.literal(UiSettingScope.GLOBAL), schema.literal(UiSettingScope.USER)])
-    ),
-  }),
+  query: schema.object(
+    {
+      scope: schema.maybe(
+        schema.oneOf([schema.literal(UiSettingScope.GLOBAL), schema.literal(UiSettingScope.USER)])
+      ),
+    },
+    { unknowns: 'allow' }
+  ),
 };
 
 export function registerSetRoute(router: IRouter) {
diff --git a/src/core/server/ui_settings/routes/set_many.ts b/src/core/server/ui_settings/routes/set_many.ts
index b83d2bbef20e..661d88bec4f5 100644
--- a/src/core/server/ui_settings/routes/set_many.ts
+++ b/src/core/server/ui_settings/routes/set_many.ts
@@ -39,11 +39,14 @@ const validate = {
   body: schema.object({
     changes: schema.object({}, { unknowns: 'allow' }),
   }),
-  query: schema.object({
-    scope: schema.maybe(
-      schema.oneOf([schema.literal(UiSettingScope.GLOBAL), schema.literal(UiSettingScope.USER)])
-    ),
-  }),
+  query: schema.object(
+    {
+      scope: schema.maybe(
+        schema.oneOf([schema.literal(UiSettingScope.GLOBAL), schema.literal(UiSettingScope.USER)])
+      ),
+    },
+    { unknowns: 'allow' }
+  ),
 };
 
 export function registerSetManyRoute(router: IRouter) {