diff --git a/packages/@lwc/template-compiler/src/__tests__/config.spec.ts b/packages/@lwc/template-compiler/src/__tests__/config.spec.ts
index 185e36e443..706059fd80 100644
--- a/packages/@lwc/template-compiler/src/__tests__/config.spec.ts
+++ b/packages/@lwc/template-compiler/src/__tests__/config.spec.ts
@@ -46,6 +46,7 @@ describe('customRendererConfig normalization', () => {
               "enableLwcSpread": false,
               "enableScopedSlots": false,
               "enableStaticContentOptimization": true,
+              "experimentalComplexExpressions": false,
               "experimentalComputedMemberExpression": false,
               "experimentalDynamicDirective": false,
               "preserveHtmlComments": false,