diff --git a/usr/bs_aio.c b/usr/bs_aio.c
index 0d6a640..794018a 100644
--- a/usr/bs_aio.c
+++ b/usr/bs_aio.c
@@ -124,6 +124,11 @@ static int bs_aio_init(struct scsi_lu *lu)
 	struct bs_aio_info *info =
 		(struct bs_aio_info *) ((char *)lu + sizeof(*lu));
 
+	if (__NR_eventfd < 0) {
+		eprintf("aio not suppored on this ARCH at this time.\n");
+		return -1;
+	}
+
 	ret = io_setup(MAX_AIO_REQS, &info->ctx);
 	if (ret) {
 		eprintf("fail to create aio_queue, %m\n");
diff --git a/usr/bs_aio.h b/usr/bs_aio.h
index f62e99c..b5c4bf9 100644
--- a/usr/bs_aio.h
+++ b/usr/bs_aio.h
@@ -53,7 +53,7 @@ enum {
 #elif defined(__sparc__) || defined(__sparc64__)
 #define __NR_eventfd 313
 #else
-#error Cannot detect your architecture
+#define __NR_eventfd -1
 #endif
 #endif