diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75709c54..3c1502fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@ Version 66:
 * string_param optimizations
 * Add serializer request/response aliases
 * Make consuming_buffers smaller
+* Fix costly potential value-init in parser
+* Fix unused parameter warning
 
 --------------------------------------------------------------------------------
 
diff --git a/include/beast/core/detail/static_string.hpp b/include/beast/core/detail/static_string.hpp
index 2f8a5810..03468e01 100644
--- a/include/beast/core/detail/static_string.hpp
+++ b/include/beast/core/detail/static_string.hpp
@@ -119,6 +119,7 @@ template<
 CharT*
 raw_to_string(CharT* last, std::size_t size, Integer i)
 {
+    boost::ignore_unused(size);
     BOOST_ASSERT(size >= max_digits(sizeof(Integer)));
     return raw_to_string<CharT, Integer, Traits>(
         last, i, std::is_signed<Integer>{});
diff --git a/include/beast/http/parser.hpp b/include/beast/http/parser.hpp
index f6182990..e6b9481d 100644
--- a/include/beast/http/parser.hpp
+++ b/include/beast/http/parser.hpp
@@ -67,7 +67,12 @@ public:
         message<isRequest, Body, basic_fields<Allocator>>;
 
     /// Constructor (default)
-    parser() = default;
+    parser()
+    {
+        // avoid `parser()=default` otherwise value-init
+        // for members can happen (i.e. a big memset on
+        // static_buffer_n).
+    }
 
     /// Copy constructor (disallowed)
     parser(parser const&) = delete;