The class of Gorenstein injective modules is covering if and only if it is closed under direct limits

We prove that the class of Gorenstein injective modules is covering if and only if it is closed under direct limits. This adds to the list of examples that support Enochs conjecture: Every covering class of modules is closed under direct limits. We also show that the class of Gorenstein injective left R-modules is covering if and only if R is left noetherian, and such that character modules of Gorenstein injective left R modules are Gorenstein flat.