diff --git a/examples/ClientTests/CMakeLists.txt b/examples/ClientTests/CMakeLists.txt
index 797bd9dd3..568534768 100644
--- a/examples/ClientTests/CMakeLists.txt
+++ b/examples/ClientTests/CMakeLists.txt
@@ -568,8 +568,8 @@ if (DD4HEP_USE_GEANT4)
     foreach(script SiliconBlockGFlash SiliconBlockFastSim)
       dd4hep_add_test_reg( ClientTests_sim_${script}_LONGTEST
         COMMAND    "${CMAKE_INSTALL_PREFIX}/bin/run_test_ClientTests.sh"
-        EXEC_ARGS  ${Python_EXECUTABLE} ${ClientTestsEx_INSTALL}/scripts/${script}.py -batch -events 2
-		   -geometry ${ClientTestsEx_INSTALL}/compact/SiliconBlock.xml -batch -events 2
+        EXEC_ARGS  ${Python_EXECUTABLE} ${ClientTestsEx_INSTALL}/scripts/${script}.py -batch -events 200
+		   -geometry ${ClientTestsEx_INSTALL}/compact/SiliconBlock.xml -batch -events 200
         REGEX_PASS "Event 1 Begin event action. Access event related information"
         REGEX_FAIL "EXCEPTION; Exception;ERROR;Error" )
     endforeach(script)