diff --git a/econtext/core.py b/econtext/core.py
index 06334b80..fbd8e98c 100644
--- a/econtext/core.py
+++ b/econtext/core.py
@@ -698,7 +698,7 @@ class ExternalContext(object):
         self.stdout_log = IoLogger(self.broker, 'stdout', 1)
         self.stderr_log = IoLogger(self.broker, 'stderr', 2)
         # Reopen with line buffering.
-        sys.stdout = file('/dev/stdout', 'w', 1)
+        sys.stdout = os.fdopen(1, 'w', 1)
 
         fp = file('/dev/null')
         try: