diff --git a/boost/gil/extension/dynamic_image/apply_operation_base.hpp b/boost/gil/extension/dynamic_image/apply_operation_base.hpp
index 418be04..e9b1c5a 100644
--- a/boost/gil/extension/dynamic_image/apply_operation_base.hpp
+++ b/boost/gil/extension/dynamic_image/apply_operation_base.hpp
@@ -141,7 +141,7 @@ namespace detail {
     template <typename T2, typename Op>
     struct reduce_bind1 {
         const T2& _t2;
-        mutable Op&  _op;
+        Op&  _op;
 
         typedef typename Op::result_type result_type;
 
@@ -154,7 +154,7 @@ namespace detail {
     struct reduce_bind2 {
         const Bits1& _bits1;
         std::size_t _index1;
-        mutable Op&  _op;
+        Op&  _op;
 
         typedef typename Op::result_type result_type;
 
diff --git a/boost/interprocess/containers/container/detail/transform_iterator.hpp b/boost/interprocess/containers/container/detail/transform_iterator.hpp
index 64bf147..96b22a2 100644
--- a/boost/interprocess/containers/container/detail/transform_iterator.hpp
+++ b/boost/interprocess/containers/container/detail/transform_iterator.hpp
@@ -51,7 +51,7 @@ struct operator_arrow_proxy<T&>
    // This function is needed for MWCW and BCC, which won't call operator->
    // again automatically per 13.3.1.2 para 8
 //   operator T*() const { return &m_value; }
-   mutable T &m_value;
+   T &m_value;
 };
 
 template <class Iterator, class UnaryFunction>
diff --git a/boost/interprocess/detail/transform_iterator.hpp b/boost/interprocess/detail/transform_iterator.hpp
index f98c641..b6e1139 100644
--- a/boost/interprocess/detail/transform_iterator.hpp
+++ b/boost/interprocess/detail/transform_iterator.hpp
@@ -54,7 +54,7 @@ struct operator_arrow_proxy<T&>
    // This function is needed for MWCW and BCC, which won't call operator->
    // again automatically per 13.3.1.2 para 8
 //   operator T*() const { return &m_value; }
-   mutable T &m_value;
+   T &m_value;
 };
 
 template <class Iterator, class UnaryFunction>
diff --git a/boost/intrusive/detail/transform_iterator.hpp b/boost/intrusive/detail/transform_iterator.hpp
index a9de49e..15ef3ab 100644
--- a/boost/intrusive/detail/transform_iterator.hpp
+++ b/boost/intrusive/detail/transform_iterator.hpp
@@ -46,7 +46,7 @@ struct operator_arrow_proxy<T&>
    // This function is needed for MWCW and BCC, which won't call operator->
    // again automatically per 13.3.1.2 para 8
 //   operator T*() const { return &m_value; }
-   mutable T &m_value;
+   T &m_value;
 };
 
 template <class Iterator, class UnaryFunction>