diff --git a/pym/_emerge/EbuildMetadataPhase.py b/pym/_emerge/EbuildMetadataPhase.py
index eaa7f40..5925ec4 100644
--- a/pym/_emerge/EbuildMetadataPhase.py
+++ b/pym/_emerge/EbuildMetadataPhase.py
@@ -1,4 +1,4 @@
-# Copyright 1999-2009 Gentoo Foundation
+# Copyright 1999-2011 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 from _emerge.SubProcess import SubProcess
@@ -83,7 +83,7 @@
 		fd_pipes[self._metadata_fd] = slave_fd
 
 		self._raw_metadata = []
-		files.ebuild = os.fdopen(master_fd, 'rb')
+		files.ebuild = os.fdopen(master_fd, 'rb', 0)
 		self._reg_id = self.scheduler.register(files.ebuild.fileno(),
 			self._registered_events, self._output_handler)
 		self._registered = True
diff --git a/pym/portage/package/ebuild/doebuild.py b/pym/portage/package/ebuild/doebuild.py
index d2f226c..6fc7489 100644
--- a/pym/portage/package/ebuild/doebuild.py
+++ b/pym/portage/package/ebuild/doebuild.py
@@ -587,7 +587,7 @@
 				mypids = _spawn_phase(mydo, mysettings, returnpid=True,
 					fd_pipes=fd_pipes)
 				os.close(pw) # belongs exclusively to the child process now
-				f = os.fdopen(pr, 'rb')
+				f = os.fdopen(pr, 'rb', 0)
 				for k, v in zip(auxdbkeys,
 					(_unicode_decode(line).rstrip('\n') for line in f)):
 					dbkey[k] = v
diff --git a/pym/portage/tests/lazyimport/test_lazy_import_portage_baseline.py b/pym/portage/tests/lazyimport/test_lazy_import_portage_baseline.py
index 14ed3a1..7c3b2f9 100644
--- a/pym/portage/tests/lazyimport/test_lazy_import_portage_baseline.py
+++ b/pym/portage/tests/lazyimport/test_lazy_import_portage_baseline.py
@@ -1,4 +1,4 @@
-# Copyright 2010 Gentoo Foundation
+# Copyright 2010-2011 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 import re
@@ -53,7 +53,7 @@
 
 		scheduler = PollScheduler().sched_iface
 		master_fd, slave_fd = os.pipe()
-		master_file = os.fdopen(master_fd, 'rb')
+		master_file = os.fdopen(master_fd, 'rb', 0)
 		slave_file = os.fdopen(slave_fd, 'wb')
 		producer = SpawnProcess(
 			args=self._baseline_import_cmd,
diff --git a/pym/portage/tests/process/test_poll.py b/pym/portage/tests/process/test_poll.py
index 9df2e88..ee6ee0c 100644
--- a/pym/portage/tests/process/test_poll.py
+++ b/pym/portage/tests/process/test_poll.py
@@ -1,4 +1,4 @@
-# Copyright 1998-2010 Gentoo Foundation
+# Copyright 1998-2011 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 from portage import os
@@ -20,7 +20,7 @@
 
 		scheduler = PollScheduler().sched_iface
 		master_fd, slave_fd = os.pipe()
-		master_file = os.fdopen(master_fd, 'rb')
+		master_file = os.fdopen(master_fd, 'rb', 0)
 		slave_file = os.fdopen(slave_fd, 'wb')
 		producer = SpawnProcess(
 			args=["bash", "-c", "echo -n '%s'" % test_string],