diff --git a/afsk/main.c b/afsk/main.c
index 44494e6f..597d0c29 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -32,6 +32,7 @@
 #include <wiringPi.h>
 #include <time.h>
 #include "ina219.h"
+#include "Adafruit_INA219/Adafruit_INA219.h"
 
 #define VBATT 15
 #define ADC5 17