diff --git a/codec/hli/README.md b/codec/hli/README.md
index e5ca21f..b73df7c 100644
--- a/codec/hli/README.md
+++ b/codec/hli/README.md
@@ -9,9 +9,9 @@ File extension `.hli`.
 
 `[magic number][1-byte header-size length][variable-length header-size][variable-length header][raster]`
 
-### Magic number
+### Magic number
 
-The magic number of the the HLI is `HLi.v1` at the first line.
+The magic number of the HLI format is `HLi.v1` at the beginning of the file.
 
 ### Header