diff --git a/.changeset/olive-mice-hide.md b/.changeset/olive-mice-hide.md
new file mode 100644
index 00000000000..2606c7cae1c
--- /dev/null
+++ b/.changeset/olive-mice-hide.md
@@ -0,0 +1,6 @@
+---
+'graphiql': patch
+'@graphiql/react': patch
+---
+
+Respect Markdown format: ignore single newline
diff --git a/packages/graphiql-react/src/markdown.ts b/packages/graphiql-react/src/markdown.ts
index 9386e370973..1e26795a8c1 100644
--- a/packages/graphiql-react/src/markdown.ts
+++ b/packages/graphiql-react/src/markdown.ts
@@ -1,6 +1,8 @@
 import MarkdownIt from 'markdown-it';
 
 export const markdown = new MarkdownIt({
-  breaks: true,
+  // we don't want to convert \n to <br> because in markdown a single newline is not a line break
+  // https://github.com/graphql/graphiql/issues/3155
+  breaks: false,
   linkify: true,
 });