diff --git a/README.md b/README.md
index 8b7f259..4eacabb 100644
--- a/README.md
+++ b/README.md
@@ -162,7 +162,7 @@ lbl2idx = {"B": 0, "I": 1, "O": 2}
 idx2label = {0: "B", 1: "I", 2: "O"}
 
 # Tokenizer
-tokenizer = AutoTokenizer.from_pretrained("distilbert-base-uncased", add_prefix_space=True)
+tokenizer = AutoTokenizer.from_pretrained("distilbert-base-uncased")
 max_length = 512
 
 # Dataset parameters