diff --git a/calorimeters/simple_info_plot_histograms.cxx b/calorimeters/simple_info_plot_histograms.cxx
index ba73578f0f20809cb5ee7d59c810a0f7f8a67ef6..4842b354a3503c784afe637d53b1671c610bdd4a 100644
--- a/calorimeters/simple_info_plot_histograms.cxx
+++ b/calorimeters/simple_info_plot_histograms.cxx
@@ -43,7 +43,7 @@ void simple_info_plot_histograms(const char* fname = "sim_output/output_zdc_phot
   ROOT::RDataFrame d0(*t);//, {"ZDCHits","MCParticles"});
 
   dd4hep::Detector& detector = dd4hep::Detector::getInstance();
-  detector.fromCompact("ZDC_example.xml");  
+  detector.fromCompact("./calorimeters/ZDC_example.xml");  
 
   //dd4hep::VolumeManager volman = detector.volumeManager();
   //volman.getVolumeManager(detector);