Background. The main aim of terminology standardization in different branches of knowledge is to standardize and approve unmistakable terms for any field of study, to improve the further development of the Ukrainian science. Achieving these tasks is impossible without exemplary in terms of the language design of regulations that regulate the use of industry terminology – national terminological standards. The high linguistic quality of these documents allows their effective use, so the linguistic examination of national terminological standards, their analysis in terms of compliance with the norms of language culture – is an urgent task of modern science.Purpose. To analyze cases of violation of lexical and grammatical norms of the modern Ukrainian language in the formulation of definitions. Suggest ways to replace identified non-normative words, expressions and sentences in the text of the standard.Methods. Linguistic description of linguistic facts, method of component analysis, comparative and statistical methods (to identify the number or nature of linguistic errors).Results. The standard contains errors related to the use of inappropriate or redundant words, tracing paper from the Russian language, violation of the laws of melodiousness of the modern Ukrainian literary language. In some cases, non-compliance with grammatical rules has been demonstrated.Discussion. Analysis of the text of SSTU 3294-95 “Marketing. Terms and definitions of basic concepts” in terms of compliance with language norms reveals violations related to the use of lexical units not peculiar to the Ukrainian language, the use of words in inappropriate meanings, without regard to their lexical compatibility or contrary to established tradition of word usage.