diff --git a/openbsc/tests/db/db_test.c b/openbsc/tests/db/db_test.c
index f126e96..eba72df 100644
--- a/openbsc/tests/db/db_test.c
+++ b/openbsc/tests/db/db_test.c
@@ -104,3 +104,4 @@
 /* stubs */
 void input_event(void) {}
 void nm_state_event(void) {}
+void vty_out() {}