diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
index 8c85d1e..26d44c3 100644
--- a/drivers/isdn/i4l/isdn_net.c
+++ b/drivers/isdn/i4l/isdn_net.c
@@ -2924,16 +2924,17 @@
 		cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1;
 		cfg->dialwait = lp->dialwait / HZ;
 		if (lp->slave) {
-			if (strlen(lp->slave->name) > 8)
+			if (strlen(lp->slave->name) >= 10)
 				strcpy(cfg->slave, "too-long");
 			else
 				strcpy(cfg->slave, lp->slave->name);
 		} else
 			cfg->slave[0] = '\0';
 		if (lp->master) {
-			if (strlen(lp->master->name) > 8)
+			if (strlen(lp->master->name) >= 10)
 				strcpy(cfg->master, "too-long");
-			strcpy(cfg->master, lp->master->name);
+			else
+				strcpy(cfg->master, lp->master->name);
 		} else
 			cfg->master[0] = '\0';
 		return 0;