In the title compound, C(19)H(18)N(2)O(2), the two indole ring systems are essentially planar [maximum deviation = 0.015 (2) Å in both indole ring systems] and make a dihedral angle of 72.17 (7)° with each other. In the crystal, the mol-ecules are linked into a zigzag chain along the a axis via N-H⋯O hydrogen bonds.