diff --git a/cmd/zdb/zdb.c b/cmd/zdb/zdb.c
index bcd520de38..ef3920d23f 100644
--- a/cmd/zdb/zdb.c
+++ b/cmd/zdb/zdb.c
@@ -4815,7 +4815,7 @@ dump_label(const char *dev)
 			if (nvlist_size(config, &size, NV_ENCODE_XDR) != 0)
 				size = buflen;
 
-			/* If the device is a cache device clear the header. */
+			/* If the device is a cache device read the header. */
 			if (!read_l2arc_header) {
 				if (nvlist_lookup_uint64(config,
 				    ZPOOL_CONFIG_POOL_STATE, &l2cache) == 0 &&
diff --git a/module/zfs/vdev_label.c b/module/zfs/vdev_label.c
index faf89041b0..277c14ec1a 100644
--- a/module/zfs/vdev_label.c
+++ b/module/zfs/vdev_label.c
@@ -1103,6 +1103,16 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
 		    POOL_STATE_L2CACHE) == 0);
 		VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_GUID,
 		    vd->vdev_guid) == 0);
+
+		/*
+		 * This is merely to facilitate reporting the ashift of the
+		 * cache device through zdb. The actual retrieval of the
+		 * ashift (in vdev_alloc()) uses the nvlist
+		 * spa->spa_l2cache->sav_config (populated in
+		 * spa_ld_open_aux_vdevs()).
+		 */
+		VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_ASHIFT,
+		    vd->vdev_ashift) == 0);
 	} else {
 		uint64_t txg = 0ULL;