diff --git a/ndk/platforms/android-9/include/android/asset_manager.h b/ndk/platforms/android-9/include/android/asset_manager.h
index 4fa0ef3a3..57dd7cbd4 100644
--- a/ndk/platforms/android-9/include/android/asset_manager.h
+++ b/ndk/platforms/android-9/include/android/asset_manager.h
@@ -18,6 +18,8 @@
 #ifndef ANDROID_ASSET_MANAGER_H
 #define ANDROID_ASSET_MANAGER_H
 
+#include <sys/types.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/ndk/platforms/android-9/include/android/rect.h b/ndk/platforms/android-9/include/android/rect.h
index 3e81f531d..bcd42a99e 100644
--- a/ndk/platforms/android-9/include/android/rect.h
+++ b/ndk/platforms/android-9/include/android/rect.h
@@ -18,11 +18,16 @@
 #ifndef ANDROID_RECT_H
 #define ANDROID_RECT_H
 
+#include <stdint.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 typedef struct ARect {
+#ifdef __cplusplus
+    typedef int32_t value_type;
+#endif
     int32_t left;
     int32_t top;
     int32_t right;