diff --git a/openbsc/tests/gbproxy/gbproxy_test.c b/openbsc/tests/gbproxy/gbproxy_test.c
index d5675d8..c3680f5 100644
--- a/openbsc/tests/gbproxy/gbproxy_test.c
+++ b/openbsc/tests/gbproxy/gbproxy_test.c
@@ -1241,6 +1241,7 @@
 	setlinebuf(stdout);
 
 	printf("===== GbProxy test START\n");
+	gbproxy_init_config(&gbcfg);
 	test_tlv_shift_functions();
 	test_gbproxy();
 	test_gbproxy_ident_changes();