diff --git a/src/tokenizers.js b/src/tokenizers.js
index ad257fd..ee1aa19 100644
--- a/src/tokenizers.js
+++ b/src/tokenizers.js
@@ -849,7 +849,7 @@ class BertPreTokenizer extends PreTokenizer {
     constructor(config) {
         super();
         // TODO use config
-        this.pattern = /\b\p{L}+\b|[^\s\p{L}]+/gu
+        this.pattern = /\b\p{L}+\b|[^\s\p{L}]/gu;
     }
     /**
      * Tokenizes a single text using the BERT pre-tokenization scheme.