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-rw-r--r--py/mock/util.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/py/mock/util.py b/py/mock/util.py
index ee40994..2c29858 100644
--- a/py/mock/util.py
+++ b/py/mock/util.py
@@ -200,7 +200,7 @@ decorate(traceLog())
def condPersonality(per=None):
if personality_defs.get(per, None) is None: return
res = _libc.personality(personality_defs[per])
- if res:
+ if res == -1:
raise OSError(_errno.value, os.strerror(_errno.value))
getLog().debug("set personality (setarch)")