  The $t$-dependence of generalized parton distrbutions for $x\to 1$ is
discussed. We argue that constituent quark models, where the $t$-dependence for
$x\to 1$ is through the product $(1-x)t$, are inconsistent. Instead we suggest
a leading dependence in terms of $(1-x)^n t$, where $n\geq 2$, for $x\to 1$.
