diff --git a/DDG4/examples/CLICSidSimuLCIO.py b/DDG4/examples/CLICSidSimuLCIO.py
index d9707de066993c883cd3e7d9a0117b6316bb48aa..bde04bdacb346cd78134eb5ba2612cc9ecd197f4 100644
--- a/DDG4/examples/CLICSidSimuLCIO.py
+++ b/DDG4/examples/CLICSidSimuLCIO.py
@@ -44,7 +44,7 @@ def run():
   kernel.registerGlobalAction(evt2)
 
   evt1 = DDG4.EventAction(kernel,'Geant4TestEventAction/UserEvent_1')
-  evt1.Property_int=01234
+  evt1.Property_int=0o1234
   evt1.Property_double=1e11
   evt1.Property_string='Hello_1'
   evt1.enableUI()