The article proves the importance of analyzing scientific professional texts in language disciplines for students of the ―Local History and Tourism Work‖ educational and professional program. It is emphasized that such an activity allows to deepen students' understanding of scientific language and scientific style in general, to instill text editing skills, to form the ability to critically evaluate scientific products in terms of compliance with the norms of literary language. It is noted that modern scientific works often contain violations of language norms, and as a result, a separate area of research has been launched - ―error studies‖ or ―deviatology‖, which contains theoretical and applied aspects. The theoretical aspect is related to the interpretation of the concept of ―error,‖ while the applied aspect is to identify and correct errors, as well as to provide recommendations for preventing these phenomena. The article focuses on the second aspect. The study is based on the material of scientific publications of the ―Regional Studies‖ journal, which students can use as a source of information when mastering many normative and elective disciplines. The author proposes a classification of the most common mistakes identified through a continuous sample, provides illustrative material, correct options, and justification for normative writing. It is noted that the analyzed articles contain the most violations of euphony, in particular, the alternation of prepositions У, В and initial У-, В-, as well as punctuation. Grammatical and lexical errors are also quite common, while spelling errors are less common and relate mainly to the changes that have taken place in Ukrainian spelling. It is concluded that the majority of violations of language norms by students of the ―Local History and Tourism Work‖ educational and professional program are able to identify and propose reasonable corrections, since the study of many topics of the ―Ukrainian Language (for Professional Purposes)‖ and ―Eloquence in the Professional Activity of a Historian-Guide‖ disciplines involves students' work with dictionaries, manuals on language culture, reference literature, and Ukrainian spelling.