diff --git a/CHANGELOG.md b/CHANGELOG.md
index d182427c..df6c10e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,4 @@
+* Remove zlib error `invalid_code_lenths`(sic) (API Change)
 * Remove `core/type_traits.hpp` (API Change)
 * Remove `reset` function from `flat_static_buffer` (API Change)
 * Remove `mutable_data_type` from Dyanmic Buffers (API Change)
@@ -9,6 +10,9 @@
 
 API Changes:
 
+* The error code enum `invalid_code_lenths` was a synonym of `invalid_code_lengths`.
+  Affected programs should be modified to use `invalid_code_lengths`.
+
 * The `core/type_traits.hpp` public header has been removed and along with it
   the type trait `is_completion_handler`. Beast uses the CompletionHandler correctness
   checks provided by Asio. In a c++20 environment, these convert to concept checks.
diff --git a/include/boost/beast/zlib/error.hpp b/include/boost/beast/zlib/error.hpp
index 1f481907..47b5766e 100644
--- a/include/boost/beast/zlib/error.hpp
+++ b/include/boost/beast/zlib/error.hpp
@@ -107,9 +107,6 @@ enum class error
 
     /// Invalid code lengths
     invalid_code_lengths,
-#ifdef BOOST_BEAST_ALLOW_DEPRECATED
-    invalid_code_lenths = invalid_code_lengths,
-#endif
 
     /// Invalid bit length repeat
     invalid_bit_length_repeat,