diff --git a/tests/gsm0808/gsm0808_test.c b/tests/gsm0808/gsm0808_test.c
index 68771a4..28bd7f7 100644
--- a/tests/gsm0808/gsm0808_test.c
+++ b/tests/gsm0808/gsm0808_test.c
@@ -256,6 +256,8 @@
 	msg = gsm0808_create_classmark_update(&cm2, 1, &cm3, 1);
 	VERIFY(msg, res, ARRAY_SIZE(res));
 
+	msgb_free(msg);
+
 	msg = gsm0808_create_classmark_update(&cm2, 1, NULL, 0);
 	VERIFY(msg, res2o, ARRAY_SIZE(res2o));