diff --git a/inc/display.h b/inc/display.h
--- a/inc/display.h
+++ b/inc/display.h
@@ -2,6 +2,11 @@
 #define DISPLAY_H
 
 #include "states.h"
+#include "gpio.h"
+#include "ssd1306/ssd1306.h"
+#include "system/stringhelpers.h"
+#include "flash.h"
+#include "stdlib.h"
 
 #ifdef MAX31865_RTD_SENSOR
 #include "max31865.h"