diff --git a/docs/function-buffer-varints.md b/docs/function-buffer-varints.md
index b6d0c8b..f63719d 100644
--- a/docs/function-buffer-varints.md
+++ b/docs/function-buffer-varints.md
@@ -53,7 +53,7 @@ The `buffer` library will receive 4 new functions:
 buffer.readleb128(b: buffer, offset: number): number
 buffer.readuleb128(b: buffer, offset: number): number
 
-buffer.readleb128(b: buffer, offset: number, value: number): ()
+buffer.writeleb128(b: buffer, offset: number, value: number): ()
 buffer.writeuleb128(b: buffer, offset: number, value: number): ()
 ```