diff --git a/test/bit_floor_test.cpp b/test/bit_floor_test.cpp
index f94677e..6afa11e 100644
--- a/test/bit_floor_test.cpp
+++ b/test/bit_floor_test.cpp
@@ -21,8 +21,8 @@ template<class T> void test_bit_floor( T x )
     else
     {
         BOOST_TEST( boost::core::has_single_bit( y ) );
-        BOOST_TEST_LE( y, x );
-        BOOST_TEST_GT( y, x >> 1 );
+        BOOST_TEST_LE( +y, +x );
+        BOOST_TEST_GT( +y, x >> 1 );
     }
 }