diff --git a/test/nvme/simple_copy/simple_copy.c b/test/nvme/simple_copy/simple_copy.c
index 0f96c65c0..585833647 100644
--- a/test/nvme/simple_copy/simple_copy.c
+++ b/test/nvme/simple_copy/simple_copy.c
@@ -266,7 +266,7 @@ simple_copy_test(void)
 			exit(1);
 		}
 
-		range.nlb = NUM_LBAS;
+		range.nlb = NUM_LBAS - 1;
 		range.slba = 0;
 
 		rc = spdk_nvme_ns_cmd_copy(ns_entry->ns, ns_entry->qpair,