diff --git a/src/compare/setup.ts b/src/compare/setup.ts
index cfc0c22..094521c 100644
--- a/src/compare/setup.ts
+++ b/src/compare/setup.ts
@@ -59,6 +59,12 @@ export function setupRouter(
       if (parameters.length) {
         operation.parameters = parameters;
       }
+      (operation as OpenAPIV2.OperationObject).consumes ||= (
+        oas as OpenAPIV2.Document
+      ).consumes;
+      (operation as OpenAPIV2.OperationObject).produces ||= (
+        oas as OpenAPIV2.Document
+      ).produces;
       operation.security ||= oas.security;
       router.on(
         method.toUpperCase() as HTTPMethod,