diff --git a/libc/include/android/versioning.h b/libc/include/android/versioning.h
index 6bab291..ecbc33f 100644
--- a/libc/include/android/versioning.h
+++ b/libc/include/android/versioning.h
@@ -21,7 +21,6 @@
 #if defined(__BIONIC_VERSIONER)
 
 #define __INTRODUCED_IN(api_level) __attribute__((__annotate__("introduced_in=" #api_level)))
-#define __INTRODUCED_IN_NO_GUARD_FOR_NDK(api_level) __attribute__((__annotate__("introduced_in=" #api_level))) __VERSIONER_NO_GUARD
 #define __DEPRECATED_IN(api_level, msg) __attribute__((__annotate__("deprecated_in=" #api_level)))
 #define __REMOVED_IN(api_level, msg) __attribute__((__annotate__("obsoleted_in=" #api_level)))
 #define __INTRODUCED_IN_32(api_level) __attribute__((__annotate__("introduced_in_32=" #api_level)))
@@ -41,17 +40,10 @@
 // be enforced. In the case, the absence of 'strict' makes it possible to call an unavailable API
 // without the __builtin_available check, which will cause a link error at runtime.
 // Android platform build system defines this macro along with -Wunguarded-availability
-//
-// The _NO_GUARD_FOR_NDK variants keep the __VERSIONER_NO_GUARD behavior working for the NDK. This
-// allows libc++ to refer to these functions in inlines without needing to guard them, needed since
-// libc++ doesn't currently guard these calls. There's no risk to the apps though because using
-// those APIs will still cause a link error.
 #if defined(__ANDROID_UNAVAILABLE_SYMBOLS_ARE_WEAK__)
 #define __BIONIC_AVAILABILITY(__what, ...) __attribute__((__availability__(android,__what __VA_OPT__(,) __VA_ARGS__)))
-#define __INTRODUCED_IN_NO_GUARD_FOR_NDK(api_level) __INTRODUCED_IN(api_level)
 #else
 #define __BIONIC_AVAILABILITY(__what, ...) __attribute__((__availability__(android,strict,__what __VA_OPT__(,) __VA_ARGS__)))
-#define __INTRODUCED_IN_NO_GUARD_FOR_NDK(api_level)
 #endif
 
 #define __INTRODUCED_IN(api_level) __BIONIC_AVAILABILITY(introduced=api_level)
diff --git a/libc/include/bits/wctype.h b/libc/include/bits/wctype.h
index 11d5fde..13a4254 100644
--- a/libc/include/bits/wctype.h
+++ b/libc/include/bits/wctype.h
@@ -58,8 +58,8 @@
 int iswctype(wint_t __wc, wctype_t __type);
 
 typedef const void* wctrans_t;
-wint_t towctrans(wint_t __wc, wctrans_t _Nonnull __transform) __INTRODUCED_IN_NO_GUARD_FOR_NDK(26);
-wctrans_t _Nullable wctrans(const char* _Nonnull __name) __INTRODUCED_IN_NO_GUARD_FOR_NDK(26);
+wint_t towctrans(wint_t __wc, wctrans_t _Nonnull __transform) __INTRODUCED_IN(26);
+wctrans_t _Nullable wctrans(const char* _Nonnull __name) __INTRODUCED_IN(26);
 
 __END_DECLS
 
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index b160e6b..6cc7faf 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -192,7 +192,7 @@
 const char* _Nullable getprogname(void);
 void setprogname(const char* _Nonnull __name);
 
-int mblen(const char* _Nullable __s, size_t __n) __INTRODUCED_IN_NO_GUARD_FOR_NDK(26);
+int mblen(const char* _Nullable __s, size_t __n) __INTRODUCED_IN(26);
 size_t mbstowcs(wchar_t* _Nullable __dst, const char* _Nullable __src, size_t __n);
 int mbtowc(wchar_t* _Nullable __wc_ptr, const char*  _Nullable __s, size_t __n);
 int wctomb(char* _Nullable __dst, wchar_t __wc);