diff --git a/benchmarks/u_omega/analysis/demo.cxx b/benchmarks/u_omega/analysis/demo.cxx
index afdc0d9a110e447a0bac7dab499015cf0d9ce34a..e6d1863dc0999fe9fe719913a45f3531cf8fcf87 100644
--- a/benchmarks/u_omega/analysis/demo.cxx
+++ b/benchmarks/u_omega/analysis/demo.cxx
@@ -4,6 +4,7 @@
 #include <vector>
 
 #include "ROOT/RDataFrame.hxx"
+#include "Math/Vector4D.h"
 
 #include <nlohmann/json.hpp>
 using json = nlohmann::json;