This article proposes a novel account of noun incorporation in NorthernIroquoian. It is proposed that there is no special mechanism for nounincorporation and that this phenomenon falls out naturally from the geometry ofthe phrase structure under Moro’s theory of Dynamic Antisymmetry. In anutshell, when the verbal head and the nominal head undergo Merge, they form apoint of symmetric c-command, which is resolved by the nominal head moving tothe specifier of the verb phrase. Further, it is proposed that, in nounincorporation constructions with a full DP double, the incorporated noun and theDP form a constituent, which is merged in theta-position.