diff --git a/ndk/platforms/android-13/include/android/asset_manager.h b/ndk/platforms/android-13/include/android/asset_manager.h
index f5df46bd7..6ac350e9d 100644
--- a/ndk/platforms/android-13/include/android/asset_manager.h
+++ b/ndk/platforms/android-13/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-14/include/android/rect.h b/ndk/platforms/android-14/include/android/rect.h
index 64d487dc2..bcd42a99e 100644
--- a/ndk/platforms/android-14/include/android/rect.h
+++ b/ndk/platforms/android-14/include/android/rect.h
@@ -18,6 +18,8 @@
 #ifndef ANDROID_RECT_H
 #define ANDROID_RECT_H
 
+#include <stdint.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/ndk/platforms/android-3/include/jni.h b/ndk/platforms/android-3/include/jni.h
index 5a01fff72..f36398fc5 100644
--- a/ndk/platforms/android-3/include/jni.h
+++ b/ndk/platforms/android-3/include/jni.h
@@ -1144,8 +1144,8 @@ jint JNI_GetCreatedJavaVMs(JavaVM**, jsize, jsize*);
  * Prototypes for functions exported by loadable shared libs.  These are
  * called by JNI, not provided by JNI.
  */
-JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved);
-JNIEXPORT void JNI_OnUnload(JavaVM* vm, void* reserved);
+JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved);
+JNIEXPORT void JNICALL JNI_OnUnload(JavaVM* vm, void* reserved);
 
 #ifdef __cplusplus
 }