diff --git a/src/hb-font.cc b/src/hb-font.cc
index 743305107..e2abd99a6 100644
--- a/src/hb-font.cc
+++ b/src/hb-font.cc
@@ -2470,7 +2470,7 @@ hb_font_get_ptem (hb_font_t *font)
  * Synthetic boldness is applied when rendering a glyph via
  * hb_font_draw_glyph().
  *
- * If @in_place is %FALSE, then glyph advance-widths are also
+ * If @in_place is `FALSE`, then glyph advance-widths are also
  * adjusted, otherwise they are not.  The in-place mode is
  * useful for simulating [font grading](https://fonts.google.com/knowledge/glossary/grade).
  *