diff --git a/meta-phosphor/recipes-phosphor/interfaces/bmcweb_git.bb b/meta-phosphor/recipes-phosphor/interfaces/bmcweb_git.bb
index ce9a39f..57e5f01 100644
--- a/meta-phosphor/recipes-phosphor/interfaces/bmcweb_git.bb
+++ b/meta-phosphor/recipes-phosphor/interfaces/bmcweb_git.bb
@@ -17,8 +17,6 @@
 
 S = "${WORKDIR}/git"
 
-CXXFLAGS:append = " -DNEW_BOOST_URL"
-
 inherit pkgconfig meson ptest
 
 SRC_URI += " \