diff --git a/tests/test_subscriber.vty.sql b/tests/test_subscriber.vty.sql
new file mode 100644
index 0000000..ff167aa
--- /dev/null
+++ b/tests/test_subscriber.vty.sql
@@ -0,0 +1,3 @@
+-- Dummy entry with ID=100 gives all subscribers created in the VTY test an
+-- ID > 100, so we can pre-fill the database with IDs < 100.
+INSERT INTO subscriber (id, imsi) VALUES(100, '000000000000100');