diff --git a/DDG4/examples/readHEPMC.py b/DDG4/examples/readHEPMC.py
index 3099fc501f575465de0e787d4eeb05fb54de75f7..cfdd277edb1a6cc1555f84cead1c23a3456fd7b1 100644
--- a/DDG4/examples/readHEPMC.py
+++ b/DDG4/examples/readHEPMC.py
@@ -37,7 +37,7 @@ def run(input_file):
     except Exception as X:
       logger.error('\nException: readParticles: %s', str(X))
       if evtid > 0:
-        os._exit(0);
+        os._exit(0)
     if ret:
       for v in prim_vtx:
         logger.info('Mask:%04X (X:%8.2g,Y:%8.2g,Z:%8.2g) time:%8.2g Outgoing:%4d particles',