diff --git a/rtc_base/system/file_wrapper.h b/rtc_base/system/file_wrapper.h
index 5e1e3d6a16..92a552cfd9 100644
--- a/rtc_base/system/file_wrapper.h
+++ b/rtc_base/system/file_wrapper.h
@@ -12,6 +12,7 @@
 #define RTC_BASE_SYSTEM_FILE_WRAPPER_H_
 
 #include <stddef.h>
+#include <stdint.h>
 #include <stdio.h>
 
 #include <string>