diff --git a/sys/dev/usb/controller/ehci.c b/sys/dev/usb/controller/ehci.c
index 7d0d5ab6d20..0f9372585d1 100644
--- a/sys/dev/usb/controller/ehci.c
+++ b/sys/dev/usb/controller/ehci.c
@@ -210,7 +210,7 @@ ehci_reset(ehci_softc_t *sc)
 			return (0);
 		}
 	}
-	device_printf(sc->sc_bus.bdev, "Reset timeout\n");
+	device_printf(sc->sc_bus.bdev, "reset timeout\n");
 	return (USB_ERR_IOERROR);
 }
 
@@ -285,7 +285,7 @@ ehci_init_sub(struct ehci_softc *sc)
 		}
 	}
 	if (hcr) {
-		device_printf(sc->sc_bus.bdev, "Run timeout\n");
+		device_printf(sc->sc_bus.bdev, "run timeout\n");
 		return (USB_ERR_IOERROR);
 	}
 	return (USB_ERR_NORMAL_COMPLETION);
diff --git a/sys/dev/usb/serial/u3g.c b/sys/dev/usb/serial/u3g.c
index 125c104f63d..4e22e58d6cd 100644
--- a/sys/dev/usb/serial/u3g.c
+++ b/sys/dev/usb/serial/u3g.c
@@ -76,15 +76,6 @@ SYSCTL_INT(_hw_usb_u3g, OID_AUTO, debug, CTLFLAG_RW,
 #define	U3G_CONFIG_INDEX	0
 #define	U3G_BSIZE		2048
 
-#define	U3GSP_GPRS		0
-#define	U3GSP_EDGE		1
-#define	U3GSP_CDMA		2
-#define	U3GSP_UMTS		3
-#define	U3GSP_HSDPA		4
-#define	U3GSP_HSUPA		5
-#define	U3GSP_HSPA		6
-#define	U3GSP_MAX		7
-
 /* Eject methods; See also usb_quirks.h:UQ_MSC_EJECT_* */
 #define	U3GINIT_HUAWEI		1	/* Requires Huawei init command */
 #define	U3GINIT_SIERRA		2	/* Requires Sierra init command */
@@ -890,7 +881,7 @@ u3g_attach(device_t dev)
 		sc->sc_iface[nports] = id->bInterfaceNumber;
 
 		if (bootverbose && sc->sc_xfer[nports][U3G_INTR]) {
-			device_printf(dev, "port %d supports modem control",
+			device_printf(dev, "port %d supports modem control\n",
 				      nports);
 		}
 
diff --git a/sys/dev/usb/serial/uftdi.c b/sys/dev/usb/serial/uftdi.c
index 74e11dda177..9624825ddc1 100644
--- a/sys/dev/usb/serial/uftdi.c
+++ b/sys/dev/usb/serial/uftdi.c
@@ -1034,7 +1034,7 @@ uftdi_devtype_setup(struct uftdi_softc *sc, struct usb_attach_arg *uaa)
 		} else {
 			sc->sc_devtype = DEVT_232R;
 			device_printf(sc->sc_dev, "Warning: unknown FTDI "
-			    "device type, bcdDevice=0x%04x, assuming 232R", 
+			    "device type, bcdDevice=0x%04x, assuming 232R\n", 
 			    uaa->info.bcdDevice);
 		}
 		sc->sc_ucom.sc_portno = 0;
diff --git a/sys/dev/usb/wlan/if_upgt.c b/sys/dev/usb/wlan/if_upgt.c
index 51f4ed98c3b..a84644d6e92 100644
--- a/sys/dev/usb/wlan/if_upgt.c
+++ b/sys/dev/usb/wlan/if_upgt.c
@@ -428,7 +428,7 @@ upgt_get_stats(struct upgt_softc *sc)
 
 	data_cmd = upgt_getbuf(sc);
 	if (data_cmd == NULL) {
-		device_printf(sc->sc_dev, "%s: out of buffer.\n", __func__);
+		device_printf(sc->sc_dev, "%s: out of buffers.\n", __func__);
 		return;
 	}