diff --git a/nodejs/index.d.ts b/nodejs/index.d.ts
index 10e64ea..a36446c 100644
--- a/nodejs/index.d.ts
+++ b/nodejs/index.d.ts
@@ -1,5 +1,5 @@
 /**
- * Minifies a string containing HTML code.
+ * Minifies a Buffer containing UTF-8 HTML code.
  *
  * @param src - Source HTML code
  * @param cfg - Configurable minifier settings to use