In the title compound, C(13)H(10)N(2)S, the dihedral angle between the imidazole and thio-phene rings is 16.89 (19)°, and the double bond adopts an E configuration. In the crystal structure, N-H⋯N hydrogen bonds link the mol-ecules into rows along b. There is also evidence of weak C-H⋯S inter-actions.