The bondage number b(G) of a nonempty graph G was first introduced by Fink, Jacobson, Kinch and Roberts in [3]. They generalized a former approach to domination-critical graphs. in their publication they conjectured that b (G) less-than-or-equal-to DELTA(G) + 1 for any nonempty graph G. In this note we present a counterexample for the conjecture.