A qualitative thematic analysis was conducted with 25 students from a Malaysian institution to gain a deeper understanding of their motivation for using ChatGPT in English language learning. The study employed Self-Determination Theory (SDT) and the results demonstrated that ChatGPT has the potential to contribute positively to aspects related to English language competence, social connections, and independent learning processes. Therefore, ChatGPT emerges as a helpful resource for enhancing grammar, writing, and conversational tasks, allowing educators to prioritize higher order thinking abilities and intricate areas of language training. The results suggest that ChatGPT supports learners' autonomy, relatedness, and competence, which are key components of Self-Determination Theory (SDT). Nevertheless, the study also highlighted certain obstacles, such as ChatGPT's tendency to produce erroneous or nonsensical information and its restricted capacity to ensure the accuracy of content in language learning situations. These findings emphasize the need for focused efforts to tackle these difficulties. Educators must acknowledge the limitations of the tool and complement ChatGPT interactions with human interactions to provide a comprehensive and efficient language learning experience.