diff --git a/README.md b/README.md
index 80eebac..533f604 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ Convert specific layer:
 `drawing.csv`
 
 | layer | type       |   id |       x |       y |    z |
-| ----- | :--------- | ---: | ------: | ------: | ---: |
+| :---- | :--------- | ---: | ------: | ------: | ---: |
 | MAP   | LWPOLYLINE | 9896 | 202.568 | -41.517 |    0 |
 | MAP   | LWPOLYLINE | 9896 | 206.053 | -40.062 |    0 |
 | MAP   | LWPOLYLINE | 9896 | 207.450 | -36.796 |    0 |