diff --git a/src/beast/include/beast/http/detail/chunk_encode.hpp b/src/beast/include/beast/http/detail/chunk_encode.hpp
index 059f36344c..8b4a2e08c4 100644
--- a/src/beast/include/beast/http/detail/chunk_encode.hpp
+++ b/src/beast/include/beast/http/detail/chunk_encode.hpp
@@ -70,6 +70,14 @@ public:
         copy(other);
     }
 
+    /// Copy assignment
+    chunk_header& operator=(chunk_header const& other)
+    {
+        if (this != &other)
+            copy(other);
+        return *this;
+    }
+
     /** Construct a chunk header
 
         @param n The number of octets in this chunk.
diff --git a/src/beast/include/beast/http/impl/fields.ipp b/src/beast/include/beast/http/impl/fields.ipp
index f5b4a1598d..44df4c6e5f 100644
--- a/src/beast/include/beast/http/impl/fields.ipp
+++ b/src/beast/include/beast/http/impl/fields.ipp
@@ -119,8 +119,6 @@ public:
         using value_type =
             typename const_iterator::value_type;
 
-        field_range(field_range const&) = default;
-
         field_range(iter_type first, iter_type last)
             : first_(first)
             , last_(last)