diff --git a/afsk/main.c b/afsk/main.c
index 3ca10c39..0cfcc657 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -35,6 +35,7 @@
 #include <wiringPi.h>
 #include <time.h>
 #include "ina219.h"
+#include "Adafruit_INA219/Adafruit_INA219.h"
 
 // Put your callsign here
 #define CALLSIGN "KU2Y"