diff --git a/cfg/boost.cfg b/cfg/boost.cfg
index 05cdd4862..857d752b0 100644
--- a/cfg/boost.cfg
+++ b/cfg/boost.cfg
@@ -34,7 +34,7 @@
   <define name="BOOST_CHECK_EQUAL(a,b)" value="assert((a) == (b))"/>
   <define name="BOOST_WARN_EQUAL(a,b)" value="assert((a) == (b))"/>
   <define name="BOOST_REQUIRE_EQUAL(a,b)" value="assert((a) == (b))"/>
-  <define name="BOOST_LOG_ATTRIBUTE_KEYWORD(keyword_, name_, value_type_)" value="value_type_ keyword;"/>
+  <define name="BOOST_LOG_ATTRIBUTE_KEYWORD(keyword, name_, value_type_)" value="value_type_ keyword;"/>
   <!-- boost::math classification functions -->
   <function name="boost::math::fpclassify">
     <noreturn>false</noreturn>