Index: uspace/lib/usbhost/src/bus.c
===================================================================
--- uspace/lib/usbhost/src/bus.c	(revision ad0d1f52b7cadea83fb1c6c62a810861d9933b5f)
+++ uspace/lib/usbhost/src/bus.c	(revision 64532a970f3247a33dafe22f848eaf9f61ea730f)
@@ -90,5 +90,5 @@
 	assert(dev->fun);
 
-	char buf[10] = { 0 }; /* usbxyz-ss */
+	char buf[12] = { 0 }; /* usbxyz-ss */
 	snprintf(buf, sizeof(buf), "usb%u-%cs",
 	    dev->address, usb_str_speed(dev->speed)[0]);