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For discrete event systems, the control to enforce bisimilarity with respect to a given specification has been studied in , , . In this note we consider the case when the control is required to be deterministic. While a deterministic control is restrictive compared to a nondeterministic one, the case of deterministic control has its own practical significance as it is easier to implement and computationally less expensive to verify. We provide a necessary and sufficient condition for the existence of a bisimilarity enforcing deterministic control, and discuss its computational complexity. We also study properties related to the synthesis of “subspecification” and “superspecification”.