diff --git a/Makefile b/Makefile
index 1109edf5..209a58bc 100644
--- a/Makefile
+++ b/Makefile
@@ -85,8 +85,10 @@ radioafsk: afsk/ax5043.o
 radioafsk: afsk/main.o
 radioafsk: afsk/ina219.h
 radioafsk: Adafruit_INA219/Adafruit_INA219.o
+radioafsk: Adafruit_INA219/Adafruit_INA219.h
 	gcc -o radioafsk -pedantic -Wall -Wextra -L./ afsk/ax25.o afsk/ax5043.o afsk/main.o Adafruit_INA219/Adafruit_INA219.o -lwiringPi -lax5043
 
+Adafruit_INA219/Adafruit_INA219.o: Adafruit_INA219/Adafruit_INA219.c
 Adafruit_INA219/Adafruit_INA219.o: Adafruit_INA219/Adafruit_INA219.h
 	cd Adafruit_INA219; gcc -I -pedantic -Wconversion -Wall -Wextra -c Adafruit_INA219.c; cd ..