Discrepancy in max tokens

the config states 512, which one is correct?

README.md

@@ -114,7 +114,7 @@ organized by Hugging Face. We developed this model as part of the project:
 Our model is intended to be used as a sentence and short paragraph encoder. Given an input text, it outputs a vector which captures 
 the semantic information. The sentence vector may be used for information retrieval, clustering or sentence similarity tasks.
 
-By default, input text longer than 256 word pieces is truncated.
+By default, input text longer than 512 word pieces is truncated.
 
 
 ## Training procedure