diff --git a/test/lightweight_test_fail10.cpp b/test/lightweight_test_fail10.cpp
index 388c47e..80cd49d 100644
--- a/test/lightweight_test_fail10.cpp
+++ b/test/lightweight_test_fail10.cpp
@@ -8,6 +8,10 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //
 
+#if defined(__clang__)
+# pragma clang diagnostic ignored "-Wstring-plus-int"
+#endif
+
 #include <boost/core/lightweight_test.hpp>
 
 int main()