diff --git a/composables/content-parse.ts b/composables/content-parse.ts
index b113eaa1..9c0baf92 100644
--- a/composables/content-parse.ts
+++ b/composables/content-parse.ts
@@ -451,7 +451,7 @@ function transformCollapseMentions() {
   }
 
   return (node: Node, root: Node): Node | Node[] => {
-    if (processed || node.parent !== root)
+    if (processed || node.parent !== root || !node.children)
       return node
     const metions: (Node | undefined)[] = []
     const children = node.children as Node[]
diff --git a/tests/__snapshots__/content-rich.test.ts.snap b/tests/__snapshots__/content-rich.test.ts.snap
index cd75bdac..289bfb73 100644
--- a/tests/__snapshots__/content-rich.test.ts.snap
+++ b/tests/__snapshots__/content-rich.test.ts.snap
@@ -153,6 +153,11 @@ exports[`content-rich > link + mention 1`] = `
 "
 `;
 
+exports[`content-rich > plain text 1`] = `
+"hello there
+"
+`;
+
 exports[`editor > transform mentions 1`] = `
 "
 @elk Hello"
diff --git a/tests/content-rich.test.ts b/tests/content-rich.test.ts
index f66021bd..67228ba7 100644
--- a/tests/content-rich.test.ts
+++ b/tests/content-rich.test.ts
@@ -11,6 +11,11 @@ describe('content-rich', () => {
     expect(formatted).toMatchSnapshot()
   })
 
+  it('plain text', async () => {
+    const { formatted } = await render('hello there', { collapseMentionLink: true })
+    expect(formatted).toMatchSnapshot()
+  })
+
   it('link + mention', async () => {
     // https://fosstodon.org/@ayo/109383002937620723
     const { formatted } = await render('<p>Happy 🤗 we’re now using <span class="h-card"><a href="https://webtoo.ls/@vitest" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>vitest</span></a></span> (migrated from chai+mocha) <a href="https://github.com/ayoayco/astro-reactive-library/pull/203" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/ayoayco/astro-react</span><span class="invisible">ive-library/pull/203</span></a></p>')