diff --git a/src/evdev.c b/src/evdev.c
index fc5004c2..27296f8d 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -575,6 +575,7 @@ evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
 	device->fd = device_fd;
 
 	ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
+	devname[sizeof(devname) - 1] = '\0';
 	device->devname = strdup(devname);
 
 	if (!evdev_handle_device(device)) {