The article discusses some threats and side effects caused by elimination of the habilitated doctor degree and replacing it by the 'professional' doctor degree according to the proposed reform of law on the scientific degrees and titles. One of these threats is the lack of transparency in the proposed nomination procedure to choice candidates for the professor's title. Due to the abolishment of the habilitated doctor's degree the scientific level of professors may decrease. At the same time introduction of 'professional' doctorate is contradictory with the tradition of awarding the degree of doctor. That's the doctor who is the teacher - the master, someone who is teaching, 'qui is docet!'. Such a doctor - teacher means a profession itself and therefore the additional title 'professional' is not necessary. The habilitation, introduced by the Polish President Ignacy Moscicki in 1933, seems to be the best way to award the title of professor, being the guarantee for development of the science and self-reliance of the author taking into account his broad knowledge of the science.