diff --git a/app/Arduino.h b/app/Arduino.h
index b330b28b..2d52e136 100644
--- a/app/Arduino.h
+++ b/app/Arduino.h
@@ -1,7 +1,7 @@
 extern "C" {
     #include "main.h"
     #include "cmsis_os.h"
-    #include "gpio.h"
+    #include "app_hal.h"
     #include <stdio.h>
 }
 
diff --git a/target_prod/Makefile b/target_prod/Makefile
index 9a82b2c2..8dc93bce 100644
--- a/target_prod/Makefile
+++ b/target_prod/Makefile
@@ -96,7 +96,7 @@ startup_stm32l476xx.s
 CPP_SOURCES = ../app/app.cpp
 
 C_SOURCES += ../app/write.c
-C_SOURCES += ../app/gpio.c
+C_SOURCES += ../app/app_hal.c
 
 #######################################
 # binaries