diff --git a/sys/dev/nvme/nvme.h b/sys/dev/nvme/nvme.h
--- a/sys/dev/nvme/nvme.h
+++ b/sys/dev/nvme/nvme.h
@@ -643,6 +643,14 @@
 #define NVME_FEAT_SET_FID_SHIFT				(0)
 #define NVME_FEAT_SET_FID_MASK				(0xff)
 
+/* Async Events */
+#define	NVME_ASYNC_EVENT_TYPE_SHIFT			(0)
+#define	NVME_ASYNC_EVENT_TYPE_MASK			(0x7)
+#define	NVME_ASYNC_EVENT_INFO_SHIFT			(8)
+#define	NVME_ASYNC_EVENT_INFO_MASK			(0xff)
+#define	NVME_ASYNC_EVENT_LOG_PAGE_ID_SHIFT		(16)
+#define	NVME_ASYNC_EVENT_LOG_PAGE_ID_MASK		(0xff)
+
 /* Helper macro to combine *_MASK and *_SHIFT defines */
 #define NVMEM(name)	(name##_MASK << name##_SHIFT)
 
diff --git a/sys/dev/nvme/nvme_ctrlr.c b/sys/dev/nvme/nvme_ctrlr.c
--- a/sys/dev/nvme/nvme_ctrlr.c
+++ b/sys/dev/nvme/nvme_ctrlr.c
@@ -783,10 +783,11 @@
 	}
 
 	/* Associated log page is in bits 23:16 of completion entry dw0. */
-	aer->log_page_id = (cpl->cdw0 & 0xFF0000) >> 16;
+	aer->log_page_id = NVMEV(NVME_ASYNC_EVENT_LOG_PAGE_ID, cpl->cdw0);
 
 	nvme_printf(aer->ctrlr, "async event occurred (type 0x%x, info 0x%02x,"
-	    " page 0x%02x)\n", (cpl->cdw0 & 0x07), (cpl->cdw0 & 0xFF00) >> 8,
+	    " page 0x%02x)\n", NVMEV(NVME_ASYNC_EVENT_TYPE, cpl->cdw0),
+	    NVMEV(NVME_ASYNC_EVENT_INFO, cpl->cdw0),
 	    aer->log_page_id);
 
 	if (is_log_page_id_valid(aer->log_page_id)) {