diff --git a/README.md b/README.md
index 09dfbe51aaf7b0d220a51f51dad4ee50bca2321b..c3e288c948fa84a54c4f029ccd174c48ad3a3943 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ proposed one. A comparions:
 | ------------------ | :-----------: | :----------: |
 | VTK version        | 0.1           | 1.0          |
 | UnstructuredGrid   | **x**         | **x**        |
-| PolyData           | **x**         | -            |
+| PolyData           | (1d)          | -            |
 | StructuredGrid     | -             | **x**        |
 | RectilinearGrid    | -             | **x**        |
 | ImageData          | -             | **x**        |