diff --git a/tests/test_utility.cpp b/tests/test_utility.cpp
index a36ff38..1512e4f 100644
--- a/tests/test_utility.cpp
+++ b/tests/test_utility.cpp
@@ -15,7 +15,7 @@ BOOST_AUTO_TEST_CASE(test_resize)
         typedef std::vector<int>  resizable_type;
         typedef std::array<int,1> non_resizable_type;
         BOOST_CHECK(toml::detail::has_resize_method<resizable_type>::value);
-        BOOST_CHECK(not toml::detail::has_resize_method<non_resizable_type>::value);
+        BOOST_CHECK(!toml::detail::has_resize_method<non_resizable_type>::value);
     }
 
     {
@@ -29,7 +29,7 @@ BOOST_AUTO_TEST_CASE(test_resize)
         {
             thrown = true;
         }
-        BOOST_CHECK(not thrown);
+        BOOST_CHECK(!thrown);
         BOOST_CHECK_EQUAL(v.size(), 10);
     }
 
@@ -44,7 +44,7 @@ BOOST_AUTO_TEST_CASE(test_resize)
         {
             thrown = true;
         }
-        BOOST_CHECK(not thrown);
+        BOOST_CHECK(!thrown);
         BOOST_CHECK_EQUAL(a.size(), 15);
     }
 
diff --git a/toml/acceptor.hpp b/toml/acceptor.hpp
index 42a9816..5033e40 100644
--- a/toml/acceptor.hpp
+++ b/toml/acceptor.hpp
@@ -109,7 +109,7 @@ struct is_chain_of_impl
     static Iterator invoke(Iterator iter, Iterator rollback)
     {
         const Iterator tmp = headT::invoke(iter);
-        return (tmp == iter && not ignorable) ? rollback :
+        return (tmp == iter && !ignorable) ? rollback :
                 is_chain_of_impl<condT...>::invoke(tmp, rollback);
     }
 };