diff --git a/test/k4FWCoreTest/src/components/ExampleFunctionalTransformerHist.cpp b/test/k4FWCoreTest/src/components/ExampleFunctionalTransformerHist.cpp
index 5af1d7fc..d21eeb0a 100644
--- a/test/k4FWCoreTest/src/components/ExampleFunctionalTransformerHist.cpp
+++ b/test/k4FWCoreTest/src/components/ExampleFunctionalTransformerHist.cpp
@@ -29,7 +29,9 @@
 
 #if GAUDI_MAJOR_VERSION < 39
 namespace Gaudi::Accumulators {
-  using StaticRootHistogram = Gaudi::Accumulators::RootHistogram;
+  template <unsigned int ND, atomicity Atomicity = atomicity::full, typename Arithmetic = double>
+  using StaticRootHistogram =
+      Gaudi::Accumulators::RootHistogramingCounterBase<ND, Atomicity, Arithmetic, naming::histogramString>;
 }
 #endif