diff --git a/include/util/json_renderer.hpp b/include/util/json_renderer.hpp
index 2a9697129..aba5c2e4e 100644
--- a/include/util/json_renderer.hpp
+++ b/include/util/json_renderer.hpp
@@ -14,6 +14,8 @@
 #include <string>
 #include <vector>
 
+#include <boost/assert.hpp>
+
 #include <fmt/compile.h>
 
 namespace osrm::util::json
diff --git a/unit_tests/util/json_render.cpp b/unit_tests/util/json_render.cpp
index 749416cad..0fa084846 100644
--- a/unit_tests/util/json_render.cpp
+++ b/unit_tests/util/json_render.cpp
@@ -27,7 +27,8 @@ BOOST_AUTO_TEST_CASE(integer)
     BOOST_CHECK_EQUAL(str, "42");
 }
 
-BOOST_AUTO_TEST_CASE(test_json_issue_6531) {
+BOOST_AUTO_TEST_CASE(test_json_issue_6531)
+{
     std::string output;
     osrm::util::json::Renderer<std::string> renderer(output);
     renderer(0.0000000000017114087924596788);