Stella Brassesco, Enzo Olivieri, Maria Eulalia Vares Couplings and asymptotic exponentiality of exit times. (23K, Amstex) ABSTRACT. The goal of this note is simply to call attention to the resulting simplification in the proof of asymptotic exponentiality of exit times in Freidlin-Wentzell regime (as proved in [MOS]) by using the coupling proposed by T. Lindvall and C. Rogers (cf. [LR]).