diff --git a/libc/include/bits/fortify/string.h b/libc/include/bits/fortify/string.h
index 5fdbe2a..bd36483 100644
--- a/libc/include/bits/fortify/string.h
+++ b/libc/include/bits/fortify/string.h
@@ -46,7 +46,7 @@
 void* memcpy(void* const dst __pass_object_size0, const void* src, size_t copy_amount)
         __overloadable {
     size_t bos_dst = __bos0(dst);
-    if (__bos_trivially_not_lt(bos_dst, copy_amount)) {
+    if (__bos_trivially_ge(bos_dst, copy_amount)) {
         return __builtin_memcpy(dst, src, copy_amount);
     }
     return __builtin___memcpy_chk(dst, src, copy_amount, bos_dst);
@@ -56,7 +56,7 @@
 __BIONIC_FORTIFY_INLINE
 void* memmove(void* const dst __pass_object_size0, const void* src, size_t len) __overloadable {
     size_t bos_dst = __bos0(dst);
-    if (__bos_trivially_not_lt(bos_dst, len)) {
+    if (__bos_trivially_ge(bos_dst, len)) {
         return __builtin_memmove(dst, src, len);
     }
     return __builtin___memmove_chk(dst, src, len, bos_dst);
@@ -71,7 +71,7 @@
         __clang_error_if(__bos_unevaluated_lt(__bos0(dst), copy_amount),
                          "'mempcpy' called with size bigger than buffer") {
     size_t bos_dst = __bos0(dst);
-    if (__bos_trivially_not_lt(bos_dst, copy_amount)) {
+    if (__bos_trivially_ge(bos_dst, copy_amount)) {
         return __builtin_mempcpy(dst, src, copy_amount);
     }
     return __builtin___mempcpy_chk(dst, src, copy_amount, bos_dst);
diff --git a/libc/include/bits/fortify/unistd.h b/libc/include/bits/fortify/unistd.h
index dbc64c0..45ed2cf 100644
--- a/libc/include/bits/fortify/unistd.h
+++ b/libc/include/bits/fortify/unistd.h
@@ -76,7 +76,7 @@
 #if __ANDROID_API__ >= __ANDROID_API_N__
     size_t bos = __bos(buf);
 
-    if (!__bos_trivially_not_lt(bos, size)) {
+    if (!__bos_trivially_ge(bos, size)) {
         return __getcwd_chk(buf, size, bos);
     }
 #endif /* __ANDROID_API__ >= __ANDROID_API_N__ */
diff --git a/libc/include/sys/cdefs.h b/libc/include/sys/cdefs.h
index 689b650..b061c22 100644
--- a/libc/include/sys/cdefs.h
+++ b/libc/include/sys/cdefs.h
@@ -305,14 +305,8 @@
   __bos_dynamic_check_impl_and(bos_val, op, index, 1)
 
 #define __bos_trivially_ge(bos_val, index) __bos_dynamic_check_impl((bos_val), >=, (index))
-
 #define __bos_trivially_gt(bos_val, index) __bos_dynamic_check_impl((bos_val), >, (index))
 
-/* The names here are meant to match nicely with the __bos_unevaluated macros above. */
-#define __bos_trivially_not_lt __bos_trivially_ge
-#define __bos_trivially_not_le __bos_trivially_gt
-
-
 #if defined(__BIONIC_FORTIFY) || defined(__BIONIC_DECLARE_FORTIFY_HELPERS)
 #  define __BIONIC_INCLUDE_FORTIFY_HEADERS 1
 #endif