diff --git a/spec/components/pretty_text_spec.rb b/spec/components/pretty_text_spec.rb
index 114ae5e4f77..e0aba3b7dc9 100644
--- a/spec/components/pretty_text_spec.rb
+++ b/spec/components/pretty_text_spec.rb
@@ -386,7 +386,7 @@ describe PrettyText do
       end
 
       it "should keep details" do
-        expect(PrettyText.excerpt("<details><summary>expand</summary><p>hello</p></details>", 30)).to match_html "<details><summary>expand</summary></details>"
+        expect(PrettyText.excerpt("<details><summary>expand</summary><p>hello</p></details>", 30)).to match_html "<details class='disabled'><summary>expand</summary></details>"
       end
 
       it "should remove meta informations" do