diff --git a/src/include/uart.h b/src/include/uart.h
index 9601bfa7c9..cd62c6dc69 100644
--- a/src/include/uart.h
+++ b/src/include/uart.h
@@ -26,6 +26,8 @@
 #ifndef UART_H
 #define UART_H
 
+#include <stdint.h>
+
 #if CONFIG_CONSOLE_SERIAL8250 || CONFIG_CONSOLE_SERIAL8250MEM
 #include <uart8250.h>
 #endif