diff --git a/Source/preinclude.h b/Source/preinclude.h
index bc93f4d..d7a4825 100644
--- a/Source/preinclude.h
+++ b/Source/preinclude.h
@@ -26,7 +26,6 @@
 
 
 #define HAL_LED TRUE
-#define HAL_ADC FALSE
 #define HAL_LCD FALSE
 
 #define BLINK_LEDS TRUE
diff --git a/Source/zcl_app.c b/Source/zcl_app.c
index 5505c0c..4a8ef0c 100644
--- a/Source/zcl_app.c
+++ b/Source/zcl_app.c
@@ -34,6 +34,7 @@
 
 #include "hal_key.h"
 #include "hal_led.h"
+#include "hal_adc.h"
 
 #include "utils.h"