In the majority of European universities, the final thesis is an extended piece of academic writing that must be written by all students as a prerequisite for taking their state examinations. For students of foreign languages, writing their final theses is typically the ultimate opportunity to write a concise academic text in the foreign language they have been studying. Generally, a set of precisely defined criteria is applied for the assessment of final theses. The three key criteria that are intensively discussed today – in confrontation with the rise of generative AI - are creativity, originality, and individuality. A wide use of generative AI brought important ethical questions that must be carefully considered and addressed. Therefore, academic institutions try to establish clear guidelines for its use. The objective of the paper is to map the EFL university students' awareness of such regulations, as well as to analyse their perceptions, practices, and attitudes on the use of generative AI in producing final theses in English as a foreign language. Research data were collected through the questionnaire administered in September 2024 to 53 MA students who have recently written and successfully defended their bachelor theses in EFL study programmes. The results reflect a low awareness of the latest AI regulations together with mixed and ambiguous attitudes towards using AI, which is typical for the initial stages of any important change in the educational paradigm.