diff --git a/net-libs/ulfius/ulfius-2.7.14.ebuild b/net-libs/ulfius/ulfius-2.7.14.ebuild
index 85e0d8fe03..45d9e38dba 100644
--- a/net-libs/ulfius/ulfius-2.7.14.ebuild
+++ b/net-libs/ulfius/ulfius-2.7.14.ebuild
@@ -42,6 +42,9 @@ src_configure() {
 		-DWITH_YDER=OFF
 	)
 
+	# bug 917149
+	sed -i -e "s/-Werror//g" CMakeLists.txt || die
+
 	cmake_src_configure
 }