diff --git a/lessons/1-Intro/README.md b/lessons/1-Intro/README.md
index 9bfd3533..11f9291e 100644
--- a/lessons/1-Intro/README.md
+++ b/lessons/1-Intro/README.md
@@ -133,7 +133,7 @@ Year | Human Parity achieved
 2018 | [Automatic Machine Translation](https://arxiv.org/abs/1803.05567) (Chinese-to-English)
 2020 | [Image Captioning](https://arxiv.org/abs/2009.13682)
 
-Over the past few years we have witnessed huge successes with large language models, such as BERT and GPT-3. This happen happened mostly due to the fact that there is a lot of general text data available that allows us to train models to capture the structure and meaning of texts, pre-train them on general text collections, and then specialize those models for more specific tasks. We will learn more about [Natural Language Processing](../5-NLP/README.md) later in this course.
+Over the past few years we have witnessed huge successes with large language models, such as BERT and GPT-3. This happened mostly due to the fact that there is a lot of general text data available that allows us to train models to capture the structure and meaning of texts, pre-train them on general text collections, and then specialize those models for more specific tasks. We will learn more about [Natural Language Processing](../5-NLP/README.md) later in this course.
 
 ## 🚀 Challenge