diff --git a/tests/fuzz/fuzz-wire-tx_complete.c b/tests/fuzz/fuzz-wire-tx_complete.c
new file mode 100644
index 000000000..230aed8c2
--- /dev/null
+++ b/tests/fuzz/fuzz-wire-tx_complete.c
@@ -0,0 +1,32 @@
+#include "config.h"
+#include <tests/fuzz/libfuzz.h>
+#include <tests/fuzz/wire.h>
+#include <wire/peer_wire.h>
+
+struct tx_complete {
+	struct channel_id channel_id;
+};
+
+static void *encode(const tal_t *ctx, const struct tx_complete *s)
+{
+	return towire_tx_complete(ctx, &s->channel_id);
+}
+
+static struct tx_complete *decode(const tal_t *ctx, const void *p)
+{
+	struct tx_complete *s = tal(ctx, struct tx_complete);
+
+	if (fromwire_tx_complete(p, &s->channel_id))
+		return s;
+	return tal_free(s);
+}
+
+static bool equal(const struct tx_complete *x, const struct tx_complete *y)
+{
+	return memcmp(x, y, sizeof(*x)) == 0;
+}
+
+void run(const u8 *data, size_t size)
+{
+	test_decode_encode(data, size, WIRE_TX_COMPLETE, struct tx_complete);
+}