Let k be a number field. Henry H. Kim has established the exterior square transfer for GL(4), which attaches to any cuspidal automorphic representation ρ of GL(4, A k) an automorphic representation Π of GL(6, A k). At a finite place v of k, the local component ρv of ρ gives, via the Langlands correspondence, a degree 4 representation σv of the Weil-Deligne group of kv. Then Π is the unique isobaric automorphic representation of GL(6, A k) such that, whenever ρv is unramified, Πv corresponds, via the Langlands correspondence, to the exterior square Λ 2 σv of σv. Kim proves that Πv corresponds to Λ 2 σv even when ρv is ramified, except possibly if v is above 2 or 3 and ρv is cuspidal. We complete Kim's work in showing that Πv corresponds to Λ 2 σv at all finite places v of k.