diff --git a/.changeset/large-kangaroos-fly.md b/.changeset/large-kangaroos-fly.md
new file mode 100644
index 000000000..c05e180cf
--- /dev/null
+++ b/.changeset/large-kangaroos-fly.md
@@ -0,0 +1,5 @@
+---
+'gitbook': patch
+---
+
+Don't adjust fallback font for mono font.
diff --git a/packages/gitbook/src/fonts/index.ts b/packages/gitbook/src/fonts/index.ts
index e891a370c..42d0fbf38 100644
--- a/packages/gitbook/src/fonts/index.ts
+++ b/packages/gitbook/src/fonts/index.ts
@@ -39,6 +39,7 @@ export const ibmPlexMono = IBM_Plex_Mono({
     display: 'swap',
     preload: false,
     fallback: ['monospace'],
+    adjustFontFallback: false,
 });
 
 const firaSans = Fira_Sans_Extra_Condensed({