# Does the tokenization in BERT change after fine-tuning?

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**Category:** Models\
**Created:** [January 27, 2023, 6:12pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdoes-the-tokenization-in-bert-change-after-fine-tuning%2F30580 "2023-01-27T18:12:45Z")\
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**Author:** ![siddharthtumre](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/siddharthtumre/32/5865_2.png) [@siddharthtumre](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fsiddharthtumre)%5C
**Post date:** [January 27, 2023, 6:12pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdoes-the-tokenization-in-bert-change-after-fine-tuning%2F30580%2F1 "2023-01-27T18:12:45Z")

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I am using a BERT based model. I have fine-tuned on a dataset for few epochs and saved the trained model.  
I am loading my tokenizer and my model from the saved checkpoint and I could see that the tokenization happening at this checkpoint is different from the one that is not fine-tuned.

I am not sure if this is the expected behaviour.

Thanks.