diff --git a/examples/ClientTests/CMakeLists.txt b/examples/ClientTests/CMakeLists.txt
index 26f220c4a93171bcbb4326c2c054eaa800614a2f..98348f4c7978c61e1fd418b198c6b32328e03ed3 100644
--- a/examples/ClientTests/CMakeLists.txt
+++ b/examples/ClientTests/CMakeLists.txt
@@ -308,7 +308,7 @@ if (DD4HEP_USE_GEANT4)
   dd4hep_add_test_reg( ClientTests_sim_Check_Temp_Pressure_Air
     COMMAND    "${CMAKE_INSTALL_PREFIX}/bin/run_test_ClientTests.sh"
     EXEC_ARGS  python ${ClientTestsEx_INSTALL}/scripts/Check_Air.py
-    -geometry  ${ClientTestsEx_INSTALL}/compact/Check_Air.xml
+    -geometry  ${ClientTestsEx_INSTALL}/compact/Check_Air.xml batch
     REQUIRES   DDG4 Geant4
     REGEX_PASS "Imean:  85.538 eV   temperature: 333.33 K  pressure:   2.22 atm"
     REGEX_FAIL "Exception;EXCEPTION;ERROR;Error;FATAL" )
diff --git a/examples/ClientTests/scripts/Check_Air.py b/examples/ClientTests/scripts/Check_Air.py
index cfcb7076e21483ba3b873ee6f0b703b6a577507d..9bae3f3f88b7d589b91bedefb5a41d905daf681f 100644
--- a/examples/ClientTests/scripts/Check_Air.py
+++ b/examples/ClientTests/scripts/Check_Air.py
@@ -43,7 +43,7 @@ def run():
   geant4 = DDG4.Geant4(kernel, tracker='Geant4TrackerCombineAction')
   if batch:
     ui = geant4.setupCshUI(typ=None, ui=None, vis=None)
-    kernel.UI = ui.name
+    kernel.UI = 'UI'
   else:
     ui = geant4.setupCshUI(vis=vis)
   kernel.loadGeometry(geo)