diff --git a/test/check_float_funcs.cpp b/test/check_float_funcs.cpp
index 01d5168..74ca7cd 100644
--- a/test/check_float_funcs.cpp
+++ b/test/check_float_funcs.cpp
@@ -3,6 +3,11 @@
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
+#if defined(__GNUC__)
+// in type_traits/is_complete.hpp:47
+#pragma GCC diagnostic ignored "-Wconversion"
+#endif
+
 #include <boost/static_assert.hpp>
 #include <boost/type_traits/is_same.hpp>
 #include <boost/type_traits/is_convertible.hpp>