The literature on the syntax of verbless predication in Arabic is rich, but little attention has been given to the 'pronominal copula' , pron. Its main characteristics are wellknown: it only takes the form of third person independent pronouns; it is limited to equational sentences, in which the predicate is a definite noun phrase; and it must always occur between the subject and the predicate nominal. A standard view (e.g. Eid 1991, and more recently, Ouhalla 2013) has been to assume that pron, like its verbal counterpart kn, realizes subject agreement in t. In this paper, I examine the syntax of pron and review its characteristics in contrast with those of kn. I show that the complex distribution of pron challenges the standard view and supports an alternative analysis. I propose that equational sentences are underlyingly more complex than predicational verbless sentences: they project an extra functional head f between t and the small clause structure, PredP, in which the non-verbal predicate and its subject are generated. pron is in fp, while kn is in t. I argue that, because equational sentences involve two elements of the same category, i.e. dp, they are subject to the Distinctness Condition of Richards (2010). fp provides the Spell-Out domain boundary necessary to avoid a Distinctness violation. Finally, I suggest that fp is always headed by a pronominal element that functions as a linker (Philip 2012, Franco et al. 2015, a syntactic head which marks an existing grammatical relation, namely predication, between two dps. More broadly, my account is in line with the view that the identity/predicational divide in copular sentences corresponds to a difference in syntactic structure.