diff --git a/examples/DDG4/CMakeLists.txt b/examples/DDG4/CMakeLists.txt
index c7edeba44055772ccb044ed6c4637efe12bf3774..d619ab606d7424834cf4db19c4f974993e5ae56d 100644
--- a/examples/DDG4/CMakeLists.txt
+++ b/examples/DDG4/CMakeLists.txt
@@ -29,7 +29,7 @@ if (DD4HEP_USE_GEANT4)
   dd4hep_add_test_reg( test_DDG4_HepMC_reader
     COMMAND    "${CMAKE_INSTALL_PREFIX}/bin/run_test_DDG4.sh"
     EXEC_ARGS  python ${DD4hep_DIR}/examples/DDG4/examples/readHEPMC.py
-            ${CMAKE_INSTALL_PREFIX}/examples/DDG4/data/hepmc_geant4.dat
+            ${CMAKE_INSTALL_PREFIX}/DDG4/data/hepmc_geant4.dat
     REQUIRES   DDG4 Geant4
     REGEX_PASS "EventReaderHepMC::moveToEvent INFO  Current event number: 9")
 endif()