diff --git a/tests/test_bridge.c b/tests/test_bridge.c
index 43b5d76..4728b28 100644
--- a/tests/test_bridge.c
+++ b/tests/test_bridge.c
@@ -35,7 +35,7 @@
 	return 0;
 }
 
-static int mctp_binding_bridge_rx(struct mctp_binding_bridge *binding,
+static void mctp_binding_bridge_rx(struct mctp_binding_bridge *binding,
 		uint8_t key)
 {
 	struct mctp_pktbuf *pkt;
@@ -44,6 +44,7 @@
 
 	pkt = mctp_pktbuf_alloc(&binding->binding,
 			sizeof(struct mctp_hdr) + 1);
+	assert(pkt);
 
 	hdr = mctp_pktbuf_hdr(pkt);
 	hdr->flags_seq_tag = MCTP_HDR_FLAG_SOM | MCTP_HDR_FLAG_EOM;