diff --git a/include/boost/mpl/arg.hpp b/include/boost/mpl/arg.hpp
index 4cc9476..2af8d46 100644
--- a/include/boost/mpl/arg.hpp
+++ b/include/boost/mpl/arg.hpp
@@ -106,7 +106,8 @@ template<> struct arg<i>
     {
         typedef BOOST_PP_CAT(U,i) type;
 #if !defined(__BORLANDC__) || (__BORLANDC__ > 0x561 && defined(BOOST_STRICT_CONFIG))
-        BOOST_STATIC_ASSERT(!is_void_<type>::value);
+        BOOST_STATIC_CONSTANT(bool, nv = !is_void_<type>::value);
+        BOOST_STATIC_ASSERT(nv);
 #endif
     };
 };
@@ -127,7 +128,8 @@ template<> struct arg<-1>
     {
         typedef U1 type;
 #if !defined(__BORLANDC__) || (__BORLANDC__ > 0x561 && defined(BOOST_STRICT_CONFIG))
-        BOOST_STATIC_ASSERT(!is_void_<type>::value);
+        BOOST_STATIC_CONSTANT(bool, nv = !is_void_<type>::value);
+        BOOST_STATIC_ASSERT(nv);
 #endif
     };
 };
diff --git a/include/boost/mpl/aux_/preprocessed/plain/arg.hpp b/include/boost/mpl/aux_/preprocessed/plain/arg.hpp
index 4e5aa5e..e3c94c5 100644
--- a/include/boost/mpl/aux_/preprocessed/plain/arg.hpp
+++ b/include/boost/mpl/aux_/preprocessed/plain/arg.hpp
@@ -15,8 +15,9 @@ template<> struct arg<-1>
     struct apply
     {
         typedef U1 type;
-        BOOST_STATIC_ASSERT(!is_void_<type>::value);
-
+     private:
+        BOOST_STATIC_CONSTANT(bool, nv = !is_void_<type>::value);
+        BOOST_STATIC_ASSERT(nv);
     };
 };
 
@@ -32,8 +33,8 @@ template<> struct arg<1>
     struct apply
     {
         typedef U1 type;
-        BOOST_STATIC_ASSERT(!is_void_<type>::value);
-
+        BOOST_STATIC_CONSTANT(bool, nv = !is_void_<type>::value);
+        BOOST_STATIC_ASSERT(nv);
     };
 };
 
@@ -49,8 +50,8 @@ template<> struct arg<2>
     struct apply
     {
         typedef U2 type;
-        BOOST_STATIC_ASSERT(!is_void_<type>::value);
-
+        BOOST_STATIC_CONSTANT(bool, nv = !is_void_<type>::value);
+        BOOST_STATIC_ASSERT(nv);
     };
 };
 
@@ -66,8 +67,8 @@ template<> struct arg<3>
     struct apply
     {
         typedef U3 type;
-        BOOST_STATIC_ASSERT(!is_void_<type>::value);
-
+        BOOST_STATIC_CONSTANT(bool, nv = !is_void_<type>::value);
+        BOOST_STATIC_ASSERT(nv);
     };
 };
 
@@ -83,8 +84,8 @@ template<> struct arg<4>
     struct apply
     {
         typedef U4 type;
-        BOOST_STATIC_ASSERT(!is_void_<type>::value);
-
+        BOOST_STATIC_CONSTANT(bool, nv = !is_void_<type>::value);
+        BOOST_STATIC_ASSERT(nv);
     };
 };
 
@@ -100,8 +101,8 @@ template<> struct arg<5>
     struct apply
     {
         typedef U5 type;
-        BOOST_STATIC_ASSERT(!is_void_<type>::value);
-
+        BOOST_STATIC_CONSTANT(bool, nv = !is_void_<type>::value);
+        BOOST_STATIC_ASSERT(nv);
     };
 };