diff --git a/flix/mavlink.ino b/flix/mavlink.ino
index 20813b6..3a61471 100644
--- a/flix/mavlink.ino
+++ b/flix/mavlink.ino
@@ -54,9 +54,9 @@ void sendMavlink() {
 	}
 }
 
-inline void sendMessage(const void *msg) {
+void sendMessage(const void *msg) {
 	uint8_t buf[MAVLINK_MAX_PACKET_LEN];
-	uint16_t len = mavlink_msg_to_send_buffer(buf, (mavlink_message_t *)msg);
+	int len = mavlink_msg_to_send_buffer(buf, (mavlink_message_t *)msg);
 	sendWiFi(buf, len);
 }
 
diff --git a/flix/util.ino b/flix/util.ino
index 97b9e85..3976783 100644
--- a/flix/util.ino
+++ b/flix/util.ino
@@ -3,7 +3,7 @@
 
 // Utility functions
 
-#include "math.h"
+#include <math.h>
 #include <soc/soc.h>
 #include <soc/rtc_cntl_reg.h>
 
@@ -23,7 +23,7 @@ float randomFloat(float min, float max) {
 	return min + (max - min) * (float)rand() / RAND_MAX;
 }
 
-// wrap angle to [-PI, PI)
+// Wrap angle to [-PI, PI)
 float wrapAngle(float angle) {
 	angle = fmodf(angle, 2 * PI);
 	if (angle > PI) {
diff --git a/flix/wifi.ino b/flix/wifi.ino
index 9c9b2ab..05c03df 100644
--- a/flix/wifi.ino
+++ b/flix/wifi.ino
@@ -22,7 +22,8 @@ void setupWiFi() {
 	IPAddress myIP = WiFi.softAPIP();
 }
 
-inline void sendWiFi(const uint8_t *buf, size_t len) {
+void sendWiFi(const uint8_t *buf, int len) {
+// if (!udp.beginPacket(WIFI_UDP_IP, WIFI_UDP_PORT)) return;
 	udp.beginPacket(WIFI_UDP_IP, WIFI_UDP_PORT);
 	udp.write(buf, len);
 	udp.endPacket();