diff --git a/src/wscutil.c b/src/wscutil.c
index cb1db8fe..bcb6bc19 100644
--- a/src/wscutil.c
+++ b/src/wscutil.c
@@ -1479,6 +1479,31 @@ int wsc_parse_m8_encrypted_settings(const uint8_t *pdu, uint32_t len,
 	return 0;
 }
 
+int wsc_parse_wsc_ack(const uint8_t *pdu, uint32_t len, struct wsc_ack *out)
+{
+	int r;
+	struct wsc_wfa_ext_iter iter;
+	uint8_t version;
+	enum wsc_message_type msg_type;
+
+	memset(out, 0, sizeof(struct wsc_ack));
+
+	r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
+		REQUIRED(VERSION, &version),
+		REQUIRED(MESSAGE_TYPE, &msg_type),
+		REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
+		REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
+		WSC_ATTR_INVALID);
+
+	if (r < 0)
+		return r;
+
+	if (msg_type != WSC_MESSAGE_TYPE_WSC_ACK)
+		return -EBADMSG;
+
+	return 0;
+}
+
 int wsc_parse_nack(const uint8_t *pdu, uint32_t len, struct wsc_nack *out)
 {
 	int r;
diff --git a/src/wscutil.h b/src/wscutil.h
index f374068e..9333af07 100644
--- a/src/wscutil.h
+++ b/src/wscutil.h
@@ -515,6 +515,12 @@ struct wsc_m8_encrypted_settings {
 	uint8_t authenticator[8];
 };
 
+struct wsc_ack {
+	bool version2;
+	uint8_t enrollee_nonce[16];
+	uint8_t registrar_nonce[16];
+};
+
 struct wsc_nack {
 	bool version2;
 	uint8_t enrollee_nonce[16];
@@ -563,6 +569,7 @@ int wsc_parse_m8_encrypted_settings(const uint8_t *pdu, uint32_t len,
 					struct wsc_m8_encrypted_settings *out,
 					struct iovec *iov, size_t *iovcnt);
 
+int wsc_parse_wsc_ack(const uint8_t *pdu, uint32_t len, struct wsc_ack *out);
 int wsc_parse_nack(const uint8_t *pdu, uint32_t len, struct wsc_nack *out);
 
 int wsc_parse_wsc_done(const uint8_t *pdu, uint32_t len, struct wsc_done *out);