diff --git a/src/main/java/org/xerial/snappy/SnappyInputStream.java b/src/main/java/org/xerial/snappy/SnappyInputStream.java
index b251820..3e0a3ba 100755
--- a/src/main/java/org/xerial/snappy/SnappyInputStream.java
+++ b/src/main/java/org/xerial/snappy/SnappyInputStream.java
@@ -330,8 +330,9 @@ public class SnappyInputStream extends InputStream
     }
 
     /**
-     *
+     * Read next len bytes
      * @param dest
+     * @param offset
      * @param len
      * @return read bytes
      */