diff --git a/_pytest/pytester.py b/_pytest/pytester.py
index 2048cf563..cb178bb24 100644
--- a/_pytest/pytester.py
+++ b/_pytest/pytester.py
@@ -74,7 +74,10 @@ class LsofFdLeakChecker(object):
     def matching_platform(self):
         try:
             py.process.cmdexec("lsof -v")
-        except py.process.cmdexec.Error:
+        except (py.process.cmdexec.Error, UnicodeDecodeError):
+            # cmdexec may raise UnicodeDecodeError on Windows systems
+            # with locale other than english:
+            # https://bitbucket.org/pytest-dev/py/issues/66
             return False
         else:
             return True
diff --git a/testing/test_capture.py b/testing/test_capture.py
index 2b1fc69c8..b20961c03 100644
--- a/testing/test_capture.py
+++ b/testing/test_capture.py
@@ -650,7 +650,7 @@ def lsof_check():
     try:
         out = py.process.cmdexec("lsof -p %d" % pid)
     except (py.process.cmdexec.Error, UnicodeDecodeError):
-        # about UnicodeDecodeError, see note on conftest.py 
+        # about UnicodeDecodeError, see note on pytester
         pytest.skip("could not run 'lsof'")
     yield
     out2 = py.process.cmdexec("lsof -p %d" % pid)