diff --git a/openbsc/src/libmsc/vty_interface_layer3.c b/openbsc/src/libmsc/vty_interface_layer3.c
index f631bcc..e503291 100644
--- a/openbsc/src/libmsc/vty_interface_layer3.c
+++ b/openbsc/src/libmsc/vty_interface_layer3.c
@@ -1079,7 +1079,7 @@
       "Minimum for subscriber extension\n""Maximum for subscriber extension\n")
 {
 	struct gsm_network *gsmnet = gsmnet_from_vty(vty);
-	uint64_t mi = atoi(argv[0]), ma = atoi(argv[1]);
+	uint64_t mi = atoll(argv[0]), ma = atoll(argv[1]);
 	gsmnet->auto_create_subscr = true;
 	gsmnet->auto_assign_exten = true;
 	if (mi >= ma) {
diff --git a/openbsc/tests/vty_test_runner.py b/openbsc/tests/vty_test_runner.py
index 305c956..b886911 100644
--- a/openbsc/tests/vty_test_runner.py
+++ b/openbsc/tests/vty_test_runner.py
@@ -476,6 +476,17 @@
         res = self.vty.command('show subscriber imsi '+imsi)
         self.assert_(('% No subscriber found for imsi ' + imsi) == res)
 
+        # range
+        self.vty.command("end")
+        self.vty.command("configure terminal")
+        self.vty.command("nitb")
+        self.assertTrue(self.vty.verify("subscriber-create-on-demand random 9999999998 9999999999", ['']))
+        res = self.vty.command("show running-config")
+        self.assert_(res.find("subscriber-create-on-demand random 9999999998 9999999999"))
+        self.vty.command("end")
+
+
+
     def testSubscriberSettings(self):
         self.vty.enable()