diff --git a/pex/pex.py b/pex/pex.py
index 2744bb61d..826dc13e7 100644
--- a/pex/pex.py
+++ b/pex/pex.py
@@ -321,7 +321,7 @@ def execute(self):
     except SystemExit as se:
       # Print a SystemExit error message, avoiding a traceback in python3.
       # This must happen here, as sys.stderr is about to be torn down
-      if not isinstance(se.code, int):
+      if not isinstance(se.code, int) and se.code is not None:
         print(se.code, file=sys.stderr)
       raise
     finally:
diff --git a/tests/test_pex.py b/tests/test_pex.py
index 14bfa5454..39152135d 100644
--- a/tests/test_pex.py
+++ b/tests/test_pex.py
@@ -60,6 +60,14 @@ def test_pex_sys_exit_prints_non_numeric_value_no_traceback():
   _test_sys_exit(sys_exit_arg, expected_output, 1)
 
 
+def test_pex_sys_exit_doesnt_print_none():
+  _test_sys_exit('', to_bytes(''), 0)
+
+
+def test_pex_sys_exit_prints_objects():
+  _test_sys_exit('Exception("derp")', to_bytes('derp\n'), 1)
+
+
 @pytest.mark.skipif('hasattr(sys, "pypy_version_info")')
 def test_pex_atexit_swallowing():
   body = textwrap.dedent("""