diff --git a/pdc_client/runner.py b/pdc_client/runner.py
index f2786b0..bb19697 100644
--- a/pdc_client/runner.py
+++ b/pdc_client/runner.py
@@ -74,11 +74,11 @@ def load_plugins(self):
         args = sys.argv[1:]
         try:
             idx_s = args.index('-s')
-        except ValueError, IndexError:
+        except (ValueError, IndexError):
             pass
         try:
             idx_server = args.index('--server')
-        except ValueError, IndexError:
+        except (ValueError, IndexError):
             pass
         try:
             server = args[max(idx_s, idx_server) + 1]