diff --git a/include/drivers/arm/sp804.h b/include/drivers/arm/sp804.h
index 7ca5567..004fb76 100644
--- a/include/drivers/arm/sp804.h
+++ b/include/drivers/arm/sp804.h
@@ -7,6 +7,8 @@
 #ifndef __SP804_H__
 #define __SP804_H__
 
+#include <stdint.h>
+
 #define SP804_LOAD_OFFSET		0x0
 #define SP804_CURRENT_VALUE_OFFSET	0x4
 #define SP804_CTRL_OFFSET		0x8
diff --git a/include/drivers/arm/system_timer.h b/include/drivers/arm/system_timer.h
index 8cd0c8e..3bb5dfa 100644
--- a/include/drivers/arm/system_timer.h
+++ b/include/drivers/arm/system_timer.h
@@ -7,6 +7,8 @@
 #ifndef __SYSTEM_TIMER_H__
 #define __SYSTEM_TIMER_H__
 
+#include <stdint.h>
+
 /*
  * Program systimer to fire an interrupt after time_out_ms
  *