diff --git a/ndk/platforms/android-3/include/wchar.h b/ndk/platforms/android-3/include/wchar.h
index 9a6ce1de8..ecbf921fd 100644
--- a/ndk/platforms/android-3/include/wchar.h
+++ b/ndk/platforms/android-3/include/wchar.h
@@ -70,8 +70,11 @@ typedef enum {
     WC_TYPE_MAX
 } wctype_t;
 
+#ifndef WCHAR_MAX
 #define  WCHAR_MAX   255
 #define  WCHAR_MIN   0
+#endif
+
 #define  WEOF        (-1)
 
 extern wint_t            btowc(int);
diff --git a/ndk/platforms/android-8/include/wchar.h b/ndk/platforms/android-8/include/wchar.h
index b9c7b0b48..efe60bb74 100644
--- a/ndk/platforms/android-8/include/wchar.h
+++ b/ndk/platforms/android-8/include/wchar.h
@@ -70,8 +70,11 @@ typedef enum {
     WC_TYPE_MAX
 } wctype_t;
 
+#ifndef WCHAR_MAX
 #define  WCHAR_MAX   255
 #define  WCHAR_MIN   0
+#endif
+
 #define  WEOF        (-1)
 
 extern wint_t            btowc(int);
diff --git a/ndk/platforms/android-9/include/wchar.h b/ndk/platforms/android-9/include/wchar.h
index fea648c09..437f52b5b 100644
--- a/ndk/platforms/android-9/include/wchar.h
+++ b/ndk/platforms/android-9/include/wchar.h
@@ -71,8 +71,11 @@ typedef enum {
     WC_TYPE_MAX
 } wctype_t;
 
+#ifndef WCHAR_MAX
 #define  WCHAR_MAX   INT_MAX
 #define  WCHAR_MIN   INT_MIN
+#endif
+
 #define  WEOF        ((wint_t)(-1))
 
 extern wint_t            btowc(int);