Ovaj se rad bavi ovladavanjem hrvatskim kao inim jezikom izvornih govornika drugoga slavenskog jezika. Temelji se na rezultatima istraživanja u kojemu su sudjelovale dvije studentice kroatistike iz Poljske koje su provele godinu dana na studiju u Hrvatskoj. Tijekom sedmomjesečnoga je praćenja prikupljeno po deset uzoraka njihove pisane proizvodnje. Ispitanice su imale slobodu pri odabiru teme i duljine zapisa, ali vremena koje su uložile u taj zadatak. Prikupljeni su uzorci potom raščlanjeni. Utvrđivale su se morfološke osobitosti prikupljene građe: vrste riječi, padeži, glagolski oblici, odstupanja pri sprezanju i sklonidbi odnosno značenjska i gramatička odstupanja, broj odstupanja po rečenici te leksička gustoća i raznolikost. Dobiveni su rezultati dviju ispitanica potom uspoređeni te su na temelju svih rezultata donesene zaključne napomene.

This paper discusses acquisition of Croatian as L2 by native speakers of another Slavic language. It is a case study based on results of examination in which two students of Croatian language and literature from Poland have participated while studying at the university in Croatia for one year. Written data was collected during the seven-month research and each participant wrote ten narratives. Besides freely chosen topics and lenght of discourses, participants were also free to choose the time spent for completing the task. Collected samples were analysed. Therefore morphological categories were established: word classes, cases, lexical and grammatical words, verbal structures, various deviations in declension and conjugation (semantic and grammatical deviations), word frequency, average number of errors in sentences. The results of both participants were compared and based on that concluding observations will be made.