diff --git a/i18n/en.json b/i18n/en.json
index 3e9bab3c..362af122 100644
--- a/i18n/en.json
+++ b/i18n/en.json
@@ -39,5 +39,5 @@
 	"categorytree-retry": "Please wait a moment and try again.",
     "apihelp-categorytree-description": "Internal module for the CategoryTree extension.",
     "apihelp-categorytree-param-category": "Title in the category namespace, prefix will be ignored if given.",
-    "apihelp-categorytree-param-options": "Options for the CategoryTree constructor as a JSON object. Depth option defaults to 1."
-}
\ No newline at end of file
+    "apihelp-categorytree-param-options": "Options for the CategoryTree constructor as a JSON object. The <var>depth</var> option defaults to <kbd>1</kbd>."
+}