diff --git a/powerline/segments/common.py b/powerline/segments/common.py
index 01c18a20..56a51f6c 100644
--- a/powerline/segments/common.py
+++ b/powerline/segments/common.py
@@ -517,8 +517,14 @@ try:
 			if data:
 				yield interface, data.bytes_recv, data.bytes_sent
 
-	def _get_user(segment_info):
-		return psutil.Process(os.getpid()).username
+	# psutil-2.0.0: psutil.Process.username is unbound method
+	if callable(psutil.Process.username):
+		def _get_user(segment_info):
+			return psutil.Process(os.getpid()).username()
+	# pre psutil-2.0.0: psutil.Process.username has type property
+	else:
+		def _get_user(segment_info):
+			return psutil.Process(os.getpid()).username
 
 	class CPULoadPercentSegment(ThreadedSegment):
 		interval = 1
diff --git a/tests/test_segments.py b/tests/test_segments.py
index 48fde0c2..bfea4f6a 100644
--- a/tests/test_segments.py
+++ b/tests/test_segments.py
@@ -169,7 +169,18 @@ class TestCommon(TestCase):
 
 	def test_user(self):
 		new_os = new_module('os', getpid=lambda: 1)
-		new_psutil = new_module('psutil', Process=lambda pid: Args(username='def'))
+
+		class Process(object):
+			def __init__(self, pid):
+				pass
+
+			def username(self):
+				return 'def'
+
+			if hasattr(common, 'psutil') and not callable(common.psutil.Process.username):
+				username = property(username)
+
+		new_psutil = new_module('psutil', Process=Process)
 		pl = Pl()
 		with replace_env('USER', 'def') as segment_info:
 			common.username = False