diff --git a/tests/benchmarks/tnl-benchmark-simple-heat-equation.h b/tests/benchmarks/tnl-benchmark-simple-heat-equation.h
index f11900675b5e73d0cdd33038153de7b54de9e9f6..b30210815a3303fcc0206510c37a6cecdedf94af 100644
--- a/tests/benchmarks/tnl-benchmark-simple-heat-equation.h
+++ b/tests/benchmarks/tnl-benchmark-simple-heat-equation.h
@@ -23,6 +23,7 @@
 #include <config/tnlConfigDescription.h>
 #include <config/tnlParameterContainer.h>
 #include <core/tnlTimer.h>
+#include <core/tnlTimerRT.h>
 #include <core/tnlCuda.h>
 
 using namespace std;