diff --git a/packages/binding-http/src/http-server.ts b/packages/binding-http/src/http-server.ts
index e697dcdb6..2acad6640 100644
--- a/packages/binding-http/src/http-server.ts
+++ b/packages/binding-http/src/http-server.ts
@@ -306,7 +306,7 @@ export default class HttpServer implements ProtocolServer {
     }
 
     private addUrlRewriteEndpoints(form: TD.Form, forms: Array<TD.Form>): void {
-        if (this.urlRewrite) {
+        if (this.urlRewrite != null) {
             for (const [inUri, toUri] of Object.entries(this.urlRewrite)) {
                 if (form.href.endsWith(toUri)) {
                     const form2: TD.Form = JSON.parse(JSON.stringify(form)); // deep copy