diff --git a/sys/dev/mvs/mvs.c b/sys/dev/mvs/mvs.c
index a98a5925958..253fdc09647 100644
--- a/sys/dev/mvs/mvs.c
+++ b/sys/dev/mvs/mvs.c
@@ -105,7 +105,7 @@ static int
 mvs_ch_probe(device_t dev)
 {
 
-	device_set_desc_copy(dev, "Marvell SATA channel");
+	device_set_desc(dev, "Marvell SATA channel");
 	return (BUS_PROBE_DEFAULT);
 }
 
diff --git a/sys/dev/mvs/mvs_pci.c b/sys/dev/mvs/mvs_pci.c
index be9351403a0..1dfd43ae6b1 100644
--- a/sys/dev/mvs/mvs_pci.c
+++ b/sys/dev/mvs/mvs_pci.c
@@ -77,7 +77,6 @@ static struct {
 static int
 mvs_probe(device_t dev)
 {
-	char buf[64];
 	int i;
 	uint32_t devid = pci_get_devid(dev);
 	uint8_t revid = pci_get_revid(dev);
@@ -85,9 +84,8 @@ mvs_probe(device_t dev)
 	for (i = 0; mvs_ids[i].id != 0; i++) {
 		if (mvs_ids[i].id == devid &&
 		    mvs_ids[i].rev <= revid) {
-			snprintf(buf, sizeof(buf), "%s SATA controller",
+			device_set_descf(dev, "%s SATA controller",
 			    mvs_ids[i].name);
-			device_set_desc_copy(dev, buf);
 			return (BUS_PROBE_DEFAULT);
 		}
 	}
diff --git a/sys/dev/mvs/mvs_soc.c b/sys/dev/mvs/mvs_soc.c
index 696b65d5435..00a868140a0 100644
--- a/sys/dev/mvs/mvs_soc.c
+++ b/sys/dev/mvs/mvs_soc.c
@@ -74,7 +74,6 @@ static struct {
 static int
 mvs_probe(device_t dev)
 {
-	char buf[64];
 	int i;
 	uint32_t devid, revid;
 
@@ -88,9 +87,8 @@ mvs_probe(device_t dev)
 	for (i = 0; mvs_ids[i].id != 0; i++) {
 		if (mvs_ids[i].id == devid &&
 		    mvs_ids[i].rev <= revid) {
-			snprintf(buf, sizeof(buf), "%s SATA controller",
+			device_set_descf(dev, "%s SATA controller",
 			    mvs_ids[i].name);
-			device_set_desc_copy(dev, buf);
 			return (BUS_PROBE_DEFAULT);
 		}
 	}