diff --git a/IPython/testing/iptest.py b/IPython/testing/iptest.py
index 9e37416..6190004 100644
--- a/IPython/testing/iptest.py
+++ b/IPython/testing/iptest.py
@@ -476,6 +476,8 @@ def run_iptest():
                         # setuptools devs refuse to fix this problem!
                         '--exe',
                         ]
+    if '-a' not in argv and '-A' not in argv:
+        argv = argv + ['-a', '!crash']
 
     if nose.__version__ >= '0.11':
         # I don't fully understand why we need this one, but depending on what