The current study aims to investigate how Hungarian native speaker university students of English (n=6) code-switch and use discourse markers while they have to complete a picture story description task in three languages, i.e., in their native language, Hungarian, in their second language, English, and in their third language, Finnish. The results of the study show that the frequency of code-switching negatively correlates with the participants’ proficiency, that is, they code-switch mostly in their third language. At the same time, even though code-switching was most common in Finnish, the number of discourse markers were the lowest in this language. With these findings, this study attempts to prove that language proficiency does influence language learners’ code-switching tendencies. It also aims to provide examples for discourse markers and code switching in a multilingual context that may be generalized in future, larger scale research.