diff --git a/include/boost/detail/container_fwd.hpp b/include/boost/detail/container_fwd.hpp
index ef17498..a90ce5f 100644
--- a/include/boost/detail/container_fwd.hpp
+++ b/include/boost/detail/container_fwd.hpp
@@ -8,7 +8,7 @@
 #if !defined(BOOST_DETAIL_CONTAINER_FWD_HPP)
 #define BOOST_DETAIL_CONTAINER_FWD_HPP
 
-#if defined(_MSC_VER) && (_MSC_VER >= 1020) && \
+#if defined(_MSC_VER) && \
     !defined(BOOST_DETAIL_TEST_CONFIG_ONLY)
 # pragma once
 #endif
diff --git a/include/boost/detail/lightweight_test.hpp b/include/boost/detail/lightweight_test.hpp
index 49dd5e4..8704d5c 100644
--- a/include/boost/detail/lightweight_test.hpp
+++ b/include/boost/detail/lightweight_test.hpp
@@ -3,7 +3,7 @@
 
 // MS compatible compilers support #pragma once
 
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+#if defined(_MSC_VER)
 # pragma once
 #endif
 
diff --git a/include/boost/detail/lightweight_thread.hpp b/include/boost/detail/lightweight_thread.hpp
index 6fe70a6..8eba1f8 100644
--- a/include/boost/detail/lightweight_thread.hpp
+++ b/include/boost/detail/lightweight_thread.hpp
@@ -3,7 +3,7 @@
 
 // MS compatible compilers support #pragma once
 
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+#if defined(_MSC_VER)
 # pragma once
 #endif
 
diff --git a/include/boost/detail/no_exceptions_support.hpp b/include/boost/detail/no_exceptions_support.hpp
index d94e358..89336f6 100644
--- a/include/boost/detail/no_exceptions_support.hpp
+++ b/include/boost/detail/no_exceptions_support.hpp
@@ -1,7 +1,7 @@
 #ifndef BOOST_DETAIL_NO_EXCEPTIONS_SUPPORT_HPP_
 #define BOOST_DETAIL_NO_EXCEPTIONS_SUPPORT_HPP_
 
-#if (defined _MSC_VER) && (_MSC_VER >= 1200)
+#if defined(_MSC_VER)
 #  pragma once
 #endif
 
diff --git a/include/boost/detail/quick_allocator.hpp b/include/boost/detail/quick_allocator.hpp
index d54b3a7..ba048e0 100644
--- a/include/boost/detail/quick_allocator.hpp
+++ b/include/boost/detail/quick_allocator.hpp
@@ -3,7 +3,7 @@
 
 // MS compatible compilers support #pragma once
 
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+#if defined(_MSC_VER)
 # pragma once
 #endif
 
diff --git a/include/boost/detail/utf8_codecvt_facet.hpp b/include/boost/detail/utf8_codecvt_facet.hpp
index 553cc99..eb65418 100644
--- a/include/boost/detail/utf8_codecvt_facet.hpp
+++ b/include/boost/detail/utf8_codecvt_facet.hpp
@@ -7,7 +7,7 @@
 #define BOOST_UTF8_CODECVT_FACET_HPP
 
 // MS compatible compilers support #pragma once
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+#if defined(_MSC_VER)
 # pragma once
 #endif