diff --git a/lib/plugins/pagexray/index.js b/lib/plugins/pagexray/index.js
index a2ce9030b3..b85f9b363e 100644
--- a/lib/plugins/pagexray/index.js
+++ b/lib/plugins/pagexray/index.js
@@ -104,11 +104,7 @@ export default class PageXrayPlugin extends SitespeedioPlugin {
               }
             }
           }
-          this.pageXrayAggregator.addToAggregate(
-            pageSummary,
-            group,
-            message.url
-          );
+          this.pageXrayAggregator.addToAggregate(pageSummary, group);
           if (this.multi) {
             // The HAR file can have multiple URLs
             const sentURL = {};
diff --git a/lib/plugins/pagexray/pagexrayAggregator.js b/lib/plugins/pagexray/pagexrayAggregator.js
index 8d5217dac4..3cfd2cc301 100644
--- a/lib/plugins/pagexray/pagexrayAggregator.js
+++ b/lib/plugins/pagexray/pagexrayAggregator.js
@@ -15,19 +15,20 @@ export class PageXrayAggregator {
     this.groups = {};
   }
 
-  addToAggregate(pageSummary, group, url) {
+  addToAggregate(pageSummary, group) {
     if (this.groups[group] === undefined) {
       this.groups[group] = {};
     }
 
-    if (this.urls[url] === undefined) {
-      this.urls[url] = {};
-    }
-
     let stats = this.stats;
     let groups = this.groups;
 
     for (const summary of pageSummary) {
+      let url = summary.url;
+      if (this.urls[url] === undefined) {
+        this.urls[url] = {};
+      }
+
       // stats for the whole page
       for (const metric of METRIC_NAMES) {
         // There's a bug in Firefox/https://github.com/devtools-html/har-export-trigger