diff --git a/code/core/src/csf-tools/CsfFile.test.ts b/code/core/src/csf-tools/CsfFile.test.ts
index bc353e07997d..0988e938a51b 100644
--- a/code/core/src/csf-tools/CsfFile.test.ts
+++ b/code/core/src/csf-tools/CsfFile.test.ts
@@ -2,7 +2,7 @@
 import { dedent } from 'ts-dedent';
 import { describe, it, expect, vi } from 'vitest';
 import yaml from 'js-yaml';
-import { loadCsf } from './CsfFile';
+import { loadCsf, isModuleMock } from './CsfFile';
 
 expect.addSnapshotSerializer({
   print: (val: any) => yaml.dump(val).trimEnd(),
@@ -1477,6 +1477,36 @@ describe('CsfFile', () => {
       `);
     });
 
+    it('mount meta', () => {
+      expect(
+        parse(
+          dedent`
+          export default {
+            title: 'foo/bar',
+            play: ({ context, mount: mountRenamed }) => {},
+          };
+          export const A = {};
+        `
+        )
+      ).toMatchInlineSnapshot(`
+        meta:
+          title: foo/bar
+          tags:
+            - play-fn
+        stories:
+          - id: foo-bar--a
+            name: A
+            __stats:
+              play: true
+              render: false
+              loaders: false
+              beforeEach: false
+              storyFn: false
+              mount: true
+              moduleMock: false
+      `);
+    });
+
     it('meta csf2', () => {
       expect(
         parse(
@@ -1933,55 +1963,25 @@ describe('CsfFile', () => {
               moduleMock: true
       `);
     });
-    it('absolute', () => {
-      expect(
-        parse(
-          dedent`
-          import foo from '/path/to/bar.mock';
-          export default { title: 'foo/bar' };
-          export const A = {};
-        `
-        )
-      ).toMatchInlineSnapshot(`
-        meta:
-          title: foo/bar
-        stories:
-          - id: foo-bar--a
-            name: A
-            __stats:
-              play: false
-              render: false
-              loaders: false
-              beforeEach: false
-              storyFn: false
-              mount: false
-              moduleMock: true
-      `);
-    });
-    it('package', () => {
-      expect(
-        parse(
-          dedent`
-          import foo from 'smart-mock';
-          export default { title: 'foo/bar' };
-          export const A = {};
-        `
-        )
-      ).toMatchInlineSnapshot(`
-        meta:
-          title: foo/bar
-        stories:
-          - id: foo-bar--a
-            name: A
-            __stats:
-              play: false
-              render: false
-              loaders: false
-              beforeEach: false
-              storyFn: false
-              mount: false
-              moduleMock: false
-      `);
-    });
+  });
+});
+
+describe('isModuleMock', () => {
+  it('prefix', () => {
+    expect(isModuleMock('#foo.mock')).toBe(true);
+    expect(isModuleMock('./foo.mock')).toBe(true);
+    expect(isModuleMock('../foo.mock')).toBe(true);
+    expect(isModuleMock('/foo.mock')).toBe(true);
+
+    expect(isModuleMock('foo.mock')).toBe(false);
+    expect(isModuleMock('@/foo.mock')).toBe(false);
+  });
+  it('sufixes', () => {
+    expect(isModuleMock('#foo.mock.js')).toBe(true);
+    expect(isModuleMock('#foo.mock.mjs')).toBe(true);
+    expect(isModuleMock('#foo.mock.vue')).toBe(true);
+
+    expect(isModuleMock('#foo.mocktail')).toBe(false);
+    expect(isModuleMock('#foo.mock.test.ts')).toBe(false);
   });
 });
diff --git a/code/core/src/csf-tools/CsfFile.ts b/code/core/src/csf-tools/CsfFile.ts
index 912e5fd97678..149a182bcf7d 100644
--- a/code/core/src/csf-tools/CsfFile.ts
+++ b/code/core/src/csf-tools/CsfFile.ts
@@ -60,6 +60,8 @@ const formatLocation = (node: t.Node, fileName?: string) => {
   return `${fileName || ''} (line ${line}, col ${column})`.trim();
 };
 
+export const isModuleMock = (importPath: string) => MODULE_MOCK_REGEX.test(importPath);
+
 const isArgsStory = (init: t.Node, parent: t.Node, csf: CsfFile) => {
   let storyFn: t.Node = init;
   // export const Foo = Bar.bind({})
@@ -133,7 +135,7 @@ const hasMount = (play: t.Node | undefined) => {
   return false;
 };
 
-const MODULE_MOCK_REGEX = /^[.\/#].*\.mock(\.)?[^.]*$/i;
+const MODULE_MOCK_REGEX = /^[.\/#].*\.mock($|\.[^.]*$)/i;
 
 export interface CsfOptions {
   fileName?: string;
@@ -573,7 +575,7 @@ export class CsfFile {
           t.isArrowFunctionExpression(storyExport) || t.isFunctionDeclaration(storyExport)
         );
         stats.mount = hasMount(storyAnnotations.play ?? self._metaAnnotations.play);
-        stats.moduleMock = !!self.imports.find((fname) => MODULE_MOCK_REGEX.test(fname));
+        stats.moduleMock = !!self.imports.find((fname) => isModuleMock(fname));
 
         return acc;
       },