diff --git a/tests/sms/sms_test.c b/tests/sms/sms_test.c
index be166e4..d850f3b 100644
--- a/tests/sms/sms_test.c
+++ b/tests/sms/sms_test.c
@@ -88,3 +88,6 @@
 
 	gsm0411_send_sms(0, 0);
 }
+
+/* stubs */
+void input_event(void) {}