diff --git a/test/ratio_extensions/ratio_ext_pass.cpp b/test/ratio_extensions/ratio_ext_pass.cpp
index 5b0afe2..2c4f26d 100644
--- a/test/ratio_extensions/ratio_ext_pass.cpp
+++ b/test/ratio_extensions/ratio_ext_pass.cpp
@@ -13,8 +13,9 @@ boost::intmax_t func(boost::ratio<5,6>  s) {
 }
 
 void test() {
+    boost::ratio<10,12> r;
     BOOST_TEST((
-        func(boost::ratio<10,12>() )==5
+        func(r)==5
     ));
 }