diff --git a/packages/binding-http/src/http-server.ts b/packages/binding-http/src/http-server.ts
index 3d5da616b..3e28bd7a2 100644
--- a/packages/binding-http/src/http-server.ts
+++ b/packages/binding-http/src/http-server.ts
@@ -338,12 +338,12 @@ export default class HttpServer implements ProtocolServer {
             let allWriteOnly = true;
 
             for (const property of properties) {
-                const readOnly = property.readOnly ?? false;
+                const readOnly: boolean = property.readOnly ?? false;
                 if (readOnly) {
                     allReadOnly = false;
                 }
 
-                const writeOnly = property.writeOnly ?? false;
+                const writeOnly: boolean = property.writeOnly ?? false;
                 if (writeOnly) {
                     allWriteOnly = false;
                 }