diff --git a/lib/core/engine/collector.js b/lib/core/engine/collector.js
index 29c301694..d3449c01b 100644
--- a/lib/core/engine/collector.js
+++ b/lib/core/engine/collector.js
@@ -51,6 +51,7 @@ function getNewResult(url, options) {
     fullyLoaded: [],
     mainDocumentTimings: [],
     errors: [],
+    renderBlocking: [],
     server: { processesAtStart: [] }
   };
 }
@@ -400,9 +401,6 @@ export class Collector {
       }
 
       if (data.renderBlocking) {
-        if (!results.renderBlocking) {
-          results.renderBlocking = [];
-        }
         results.renderBlocking.push(data.renderBlocking);
 
         statistics.addDeep({