diff --git a/code/lib/core-server/src/utils/StoryIndexGenerator.test.ts b/code/lib/core-server/src/utils/StoryIndexGenerator.test.ts
index 454db66fea6..0065f4492e1 100644
--- a/code/lib/core-server/src/utils/StoryIndexGenerator.test.ts
+++ b/code/lib/core-server/src/utils/StoryIndexGenerator.test.ts
@@ -259,7 +259,7 @@ describe('StoryIndexGenerator', () => {
                 "importPath": "./src/nested/Page.stories.mdx",
                 "name": "StoryOne",
                 "tags": Array [
-                  "mdx",
+                  "stories-mdx",
                   "story",
                 ],
                 "title": "Page",
diff --git a/code/lib/core-server/src/utils/stories-json.test.ts b/code/lib/core-server/src/utils/stories-json.test.ts
index d35da90bdde..9dfa026e4c1 100644
--- a/code/lib/core-server/src/utils/stories-json.test.ts
+++ b/code/lib/core-server/src/utils/stories-json.test.ts
@@ -236,7 +236,7 @@ describe('useStoriesJson', () => {
               "importPath": "./src/nested/Page.stories.mdx",
               "name": "StoryOne",
               "tags": Array [
-                "mdx",
+                "stories-mdx",
                 "story",
               ],
               "title": "nested/Page",
@@ -463,7 +463,7 @@ describe('useStoriesJson', () => {
               },
               "story": "StoryOne",
               "tags": Array [
-                "mdx",
+                "stories-mdx",
                 "story",
               ],
               "title": "nested/Page",
@@ -607,7 +607,7 @@ describe('useStoriesJson', () => {
               },
               "story": "StoryOne",
               "tags": Array [
-                "mdx",
+                "stories-mdx",
                 "story",
               ],
               "title": "nested/Page",
@@ -965,7 +965,6 @@ describe('convertToIndexV3', () => {
               "docsOnly": true,
               "fileName": "./src/docs2/MetaOf.mdx",
             },
-            "standalone": true,
             "storiesImports": Array [
               "./src/A.stories.js",
             ],
diff --git a/code/lib/csf-tools/src/CsfFile.test.ts b/code/lib/csf-tools/src/CsfFile.test.ts
index 7609eff4ed7..7667f4f6247 100644
--- a/code/lib/csf-tools/src/CsfFile.test.ts
+++ b/code/lib/csf-tools/src/CsfFile.test.ts
@@ -395,7 +395,7 @@ describe('CsfFile', () => {
         meta:
           title: foo/bar
           tags:
-            - mdx
+            - stories-mdx
           includeStories:
             - __page
         stories: