Where there has been a breach of a restrictive covenant, it is not necessary to prove that the injury will be irreparable in order to obtain injunctive relief. Breeling v. Churchill, 228 Neb. 596, 423 N.W.2d 469 (1988). It is a well-defined exception to the general rule requiring a showing of actual and substantial injury as a basis for entitlement to injunctive relief, that, where one who has entered into a restrictive covenant as to the use of the land commits a distinct breach thereof, he may be enjoined irrespective of the amount of damage caused by his breach, and even if there appears to be no substantial monetary damage.