The title mol-ecule, C18H14Cl2, lies about an inversion centre. The hexa-triene chain is planar with a maximum deviation of 0.0001 (17) Å. The torsion angle of the single bond between the chain and the benzene ring is -168.49 (17)°. In the crystal, the shortest inter-molecular distance between the Cl atoms is 4.0785 (11) Å.