diff --git a/test/custom_ccs/member_ccs.cpp b/test/custom_ccs/member_ccs.cpp
index 11f9392..cae2eb9 100644
--- a/test/custom_ccs/member_ccs.cpp
+++ b/test/custom_ccs/member_ccs.cpp
@@ -6,6 +6,13 @@
 
 //------------------------------------------------------------------------------
 
+#if !defined(_M_IX86)
+
+#include <boost/config/pragma_message.hpp>
+BOOST_PRAGMA_MESSAGE("Test skipped because _M_IX86 is not defined")
+
+#else
+
 #define BOOST_FT_AUTODETECT_CALLING_CONVENTIONS
 
 #include <boost/mpl/assert.hpp>
@@ -48,3 +55,4 @@ BOOST_MPL_ASSERT((
   >
 ));
 
+#endif
diff --git a/test/custom_ccs/member_ccs_exact.cpp b/test/custom_ccs/member_ccs_exact.cpp
index 413b133..5ae4b84 100644
--- a/test/custom_ccs/member_ccs_exact.cpp
+++ b/test/custom_ccs/member_ccs_exact.cpp
@@ -6,6 +6,13 @@
 
 //------------------------------------------------------------------------------
 
+#if !defined(_M_IX86)
+
+#include <boost/config/pragma_message.hpp>
+BOOST_PRAGMA_MESSAGE("Test skipped because _M_IX86 is not defined")
+
+#else
+
 #define BOOST_FT_AUTODETECT_CALLING_CONVENTIONS
 
 #include <boost/mpl/assert.hpp>
@@ -69,3 +76,4 @@ BOOST_MPL_ASSERT_NOT((
   ft::is_callable_builtin< ft::member_function_pointer<mpl::vector<int, C &>, cc>::type, dc >
 ));
 
+#endif
diff --git a/test/custom_ccs/nonmember_ccs.cpp b/test/custom_ccs/nonmember_ccs.cpp
index 81681ff..4f35c9b 100644
--- a/test/custom_ccs/nonmember_ccs.cpp
+++ b/test/custom_ccs/nonmember_ccs.cpp
@@ -6,6 +6,13 @@
 
 //------------------------------------------------------------------------------
 
+#if !defined(_M_IX86)
+
+#include <boost/config/pragma_message.hpp>
+BOOST_PRAGMA_MESSAGE("Test skipped because _M_IX86 is not defined")
+
+#else
+
 #define BOOST_FT_AUTODETECT_CALLING_CONVENTIONS
 
 #include <boost/mpl/assert.hpp>
@@ -43,3 +50,4 @@ BOOST_MPL_ASSERT((
   >
 ));
 
+#endif
diff --git a/test/custom_ccs/nonmember_ccs_exact.cpp b/test/custom_ccs/nonmember_ccs_exact.cpp
index d6db300..1116783 100644
--- a/test/custom_ccs/nonmember_ccs_exact.cpp
+++ b/test/custom_ccs/nonmember_ccs_exact.cpp
@@ -6,6 +6,13 @@
 
 //------------------------------------------------------------------------------
 
+#if !defined(_M_IX86)
+
+#include <boost/config/pragma_message.hpp>
+BOOST_PRAGMA_MESSAGE("Test skipped because _M_IX86 is not defined")
+
+#else
+
 #define BOOST_FT_AUTODETECT_CALLING_CONVENTIONS
 
 #include <boost/mpl/assert.hpp>
@@ -58,5 +65,4 @@ BOOST_MPL_ASSERT_NOT((
   ft::is_callable_builtin< ft::function_pointer<mpl::vector<void> >::type, cc >
 ));
 
-
-
+#endif