This article analyzes the issue of the formation and expansion of patient valency through the causative form of verbs within Uzbek phraseological units. It is shown that in the semantic structure of causative verbs, it is not the agent as the direct performer of the action, but rather the lexeme in the form of a direct object that appears as a mediating or causative element bringing about the action. As a result, a mismatch arises between the syntactic object and the semantic role, which leads to the activation of patient valency. On the example of the phraseological unit ko‘z oldiga kelmoq from the text Hazrat Majoz, the mechanism by which the causative voice transforms agent valency into patient valency is revealed.