diff --git a/src/core/server/ui_settings/saved_objects/ui_settings.ts b/src/core/server/ui_settings/saved_objects/ui_settings.ts
index 26704f46a509c..452d1954b6e23 100644
--- a/src/core/server/ui_settings/saved_objects/ui_settings.ts
+++ b/src/core/server/ui_settings/saved_objects/ui_settings.ts
@@ -25,10 +25,7 @@ export const uiSettingsType: SavedObjectsType = {
   hidden: false,
   namespaceType: 'single',
   mappings: {
-    // we don't want to allow `true` in the public `SavedObjectsTypeMappingDefinition` type, however
-    // this is needed for the config that is kinda a special type. To avoid adding additional internal types
-    // just for this, we hardcast to any here.
-    dynamic: true as any,
+    dynamic: false,
     properties: {
       buildNum: {
         type: 'keyword',