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