diff --git a/include/boost/multiprecision/cpp_int/multiply.hpp b/include/boost/multiprecision/cpp_int/multiply.hpp
index dbf256e9..dbd8e29a 100644
--- a/include/boost/multiprecision/cpp_int/multiply.hpp
+++ b/include/boost/multiprecision/cpp_int/multiply.hpp
@@ -130,7 +130,7 @@ inline typename enable_if_c<!is_trivial_cpp_int<cpp_int_backend<MinBits1, MaxBit
       for(unsigned j = 0; j < inner_limit; ++j)
       {
          BOOST_ASSERT(i+j < result.size());
-#if (!defined(__GLIBCXX__) && !defined(__GLIBCPP__)) || !BOOST_WORKAROUND(BOOST_GCC_VERSION <= 50100)
+#if (!defined(__GLIBCXX__) && !defined(__GLIBCPP__)) || !BOOST_WORKAROUND(BOOST_GCC_VERSION, <= 50100)
          BOOST_ASSERT(!std::numeric_limits<double_limb_type>::is_specialized 
             || ((std::numeric_limits<double_limb_type>::max)() - carry 
                   >