diff --git a/lib/plugins/html/htmlBuilder.js b/lib/plugins/html/htmlBuilder.js
index fbc7e4f3cd..561d50fd8c 100644
--- a/lib/plugins/html/htmlBuilder.js
+++ b/lib/plugins/html/htmlBuilder.js
@@ -300,6 +300,12 @@ export class HTMLBuilder {
             )
           : [];
       let rootPath = this.storageManager.rootPathFromUrl(url, daurlAlias);
+      const summaryPagePath =
+        this.context.resultUrls.relativeSummaryPageUrl(url, daurlAlias) +
+        'index.html';
+      const baseHref = options.useSameDir
+        ? undefined
+        : rootPath + summaryPagePath;
       let data = {
         daurl: url,
         daurlAlias,
@@ -322,6 +328,7 @@ export class HTMLBuilder {
         get,
         markdown: markdown,
         rootPath,
+        baseHref,
         resultUrls: this.context.resultUrls,
         assetsPath: assetsBaseURL || rootPath,
         sitespeedioURL: options.html.homeurl,
@@ -370,6 +377,12 @@ export class HTMLBuilder {
           run => !!get(pageInfo.data, [run.id, 'run'])
         );
         let rootPath = this.storageManager.rootPathFromUrl(url, daurlAlias);
+        const runPagePath =
+          this.context.resultUrls.relativeSummaryPageUrl(url, daurlAlias) +
+          `${iteration}.html`;
+        const baseHref = options.useSameDir
+          ? undefined
+          : rootPath + runPagePath;
         let data = {
           daurl: url,
           daurlAlias,
@@ -395,6 +408,7 @@ export class HTMLBuilder {
           get,
           markdown: markdown,
           rootPath,
+          baseHref,
           resultUrls: this.context.resultUrls,
           assetsPath: assetsBaseURL || rootPath,
           sitespeedioURL: options.html.homeurl,
diff --git a/lib/plugins/html/templates/layout.pug b/lib/plugins/html/templates/layout.pug
index 5c45cb2634..9df37f649c 100644
--- a/lib/plugins/html/templates/layout.pug
+++ b/lib/plugins/html/templates/layout.pug
@@ -3,6 +3,8 @@ html(lang='en')
     head
         meta(charset='utf-8')
         meta(name='viewport', content='width=device-width, initial-scale=1')
+        if baseHref
+          base(href=baseHref)
         title= pageTitle
         meta(name='description', content=pageDescription)
         meta(name='robots', content='noindex')