diff --git a/doc/endian/arithmetic.adoc b/doc/endian/arithmetic.adoc
index 983fe7c..46e775f 100644
--- a/doc/endian/arithmetic.adoc
+++ b/doc/endian/arithmetic.adoc
@@ -389,9 +389,6 @@ namespace boost
 } // namespace boost
 ```
 
-The `implementation-defined` text above is either `big` or `little` according
-to the endianness of the platform.
-
 The only supported value of `CHAR_BIT` is 8.
 
 The valid values of `Nbits` are as follows:
diff --git a/doc/endian/buffers.adoc b/doc/endian/buffers.adoc
index 25e7339..3150d9b 100644
--- a/doc/endian/buffers.adoc
+++ b/doc/endian/buffers.adoc
@@ -367,9 +367,6 @@ namespace boost
 } // namespace boost
 ```
 
-The `implementation-defined` text in typedefs above is either `big` or `little`
-according to the native endianness of the platform.
-
 The expository data member `value_` stores the current value of the
 `endian_buffer` object as a sequence of bytes ordered as specified by the
 `Order` template parameter. The `CHAR_BIT` macro is defined in `<climits>`.