diff --git a/sys/dev/usb/serial/ubser.c b/sys/dev/usb/serial/ubser.c
index 6d66232c018d..9577a594c47a 100644
--- a/sys/dev/usb/serial/ubser.c
+++ b/sys/dev/usb/serial/ubser.c
@@ -141,7 +141,6 @@ struct ubser_softc {
 	uint8_t	sc_iface_no;
 	uint8_t	sc_iface_index;
 	uint8_t	sc_curr_tx_unit;
-	uint8_t	sc_name[16];
 };
 
 /* prototypes */
@@ -249,9 +248,6 @@ ubser_attach(device_t dev)
 	mtx_init(&sc->sc_mtx, "ubser", NULL, MTX_DEF);
 	ucom_ref(&sc->sc_super_ucom);
 
-	snprintf(sc->sc_name, sizeof(sc->sc_name), "%s",
-	    device_get_nameunit(dev));
-
 	sc->sc_iface_no = uaa->info.bIfaceNum;
 	sc->sc_iface_index = uaa->info.bIfaceIndex;
 	sc->sc_udev = uaa->device;
diff --git a/sys/dev/usb/serial/ucycom.c b/sys/dev/usb/serial/ucycom.c
index 0beccd8b312c..80aa57ed8758 100644
--- a/sys/dev/usb/serial/ucycom.c
+++ b/sys/dev/usb/serial/ucycom.c
@@ -101,7 +101,6 @@ struct ucycom_softc {
 #define	UCYCOM_CFG_STOPB	0x08
 #define	UCYCOM_CFG_DATAB	0x03
 	uint8_t	sc_ist;			/* status flags from last input */
-	uint8_t	sc_name[16];
 	uint8_t	sc_iface_no;
 	uint8_t	sc_temp_cfg[32];
 };
@@ -224,9 +223,6 @@ ucycom_attach(device_t dev)
 	mtx_init(&sc->sc_mtx, "ucycom", NULL, MTX_DEF);
 	ucom_ref(&sc->sc_super_ucom);
 
-	snprintf(sc->sc_name, sizeof(sc->sc_name),
-	    "%s", device_get_nameunit(dev));
-
 	DPRINTF("\n");
 
 	/* get chip model */
diff --git a/sys/dev/usb/serial/ufoma.c b/sys/dev/usb/serial/ufoma.c
index 5edfef8de1b6..0e9adf517297 100644
--- a/sys/dev/usb/serial/ufoma.c
+++ b/sys/dev/usb/serial/ufoma.c
@@ -195,7 +195,6 @@ struct ufoma_softc {
 	uint8_t	sc_msr;
 	uint8_t	sc_modetoactivate;
 	uint8_t	sc_currentmode;
-	uint8_t	sc_name[16];
 };
 
 /* prototypes */
@@ -394,9 +393,6 @@ ufoma_attach(device_t dev)
 
 	device_set_usb_desc(dev);
 
-	snprintf(sc->sc_name, sizeof(sc->sc_name),
-	    "%s", device_get_nameunit(dev));
-
 	DPRINTF("\n");
 
 	/* setup control transfers */
diff --git a/sys/dev/usb/serial/uftdi.c b/sys/dev/usb/serial/uftdi.c
index c5e9ae6a953c..7ffd4f28373a 100644
--- a/sys/dev/usb/serial/uftdi.c
+++ b/sys/dev/usb/serial/uftdi.c
@@ -110,8 +110,6 @@ struct uftdi_softc {
 	uint8_t	sc_hdrlen;
 	uint8_t	sc_msr;
 	uint8_t	sc_lsr;
-
-	uint8_t	sc_name[16];
 };
 
 struct uftdi_param_config {
@@ -890,9 +888,6 @@ uftdi_attach(device_t dev)
 	mtx_init(&sc->sc_mtx, "uftdi", NULL, MTX_DEF);
 	ucom_ref(&sc->sc_super_ucom);
 
-	snprintf(sc->sc_name, sizeof(sc->sc_name),
-	    "%s", device_get_nameunit(dev));
-
 	DPRINTF("\n");
 
 	sc->sc_iface_index = uaa->info.bIfaceIndex;
diff --git a/sys/dev/usb/serial/umct.c b/sys/dev/usb/serial/umct.c
index eaab70592b06..e24fbc86ea9d 100644
--- a/sys/dev/usb/serial/umct.c
+++ b/sys/dev/usb/serial/umct.c
@@ -115,7 +115,6 @@ struct umct_softc {
 	uint8_t	sc_mcr;
 	uint8_t	sc_iface_no;
 	uint8_t sc_swap_cb;
-	uint8_t	sc_name[16];
 };
 
 /* prototypes */
@@ -257,9 +256,6 @@ umct_attach(device_t dev)
 	mtx_init(&sc->sc_mtx, "umct", NULL, MTX_DEF);
 	ucom_ref(&sc->sc_super_ucom);
 
-	snprintf(sc->sc_name, sizeof(sc->sc_name),
-	    "%s", device_get_nameunit(dev));
-
 	sc->sc_iface_no = uaa->info.bIfaceNum;
 
 	iface_index = UMCT_IFACE_INDEX;