diff --git a/_pytest/fixtures.py b/_pytest/fixtures.py
index 3a1321664..f71f35768 100644
--- a/_pytest/fixtures.py
+++ b/_pytest/fixtures.py
@@ -8,6 +8,7 @@ import py
 from py._code.code import FormattedExcinfo
 
 import _pytest
+from _pytest import nodes
 from _pytest._code.code import TerminalRepr
 from _pytest.compat import (
     NOTSET, exc_clear, _format_args,
@@ -17,7 +18,6 @@ from _pytest.compat import (
     safe_getattr,
     FuncargnamesCompatAttr,
 )
-from _pytest.nodes import ischildnode
 from _pytest.outcomes import fail, TEST_OUTCOME
 
 
@@ -983,8 +983,8 @@ class FixtureManager:
             # by their test id)
             if p.basename.startswith("conftest.py"):
                 nodeid = p.dirpath().relto(self.config.rootdir)
-                if p.sep != "/":
-                    nodeid = nodeid.replace(p.sep, "/")
+                if p.sep != nodes.SEP:
+                    nodeid = nodeid.replace(p.sep, nodes.SEP)
         self.parsefactories(plugin, nodeid)
 
     def _getautousenames(self, nodeid):
@@ -1134,5 +1134,5 @@ class FixtureManager:
 
     def _matchfactories(self, fixturedefs, nodeid):
         for fixturedef in fixturedefs:
-            if ischildnode(fixturedef.baseid, nodeid):
+            if nodes.ischildnode(fixturedef.baseid, nodeid):
                 yield fixturedef
diff --git a/_pytest/junitxml.py b/_pytest/junitxml.py
index ed3ba2e9a..7fb40dc35 100644
--- a/_pytest/junitxml.py
+++ b/_pytest/junitxml.py
@@ -17,6 +17,7 @@ import re
 import sys
 import time
 import pytest
+from _pytest import nodes
 from _pytest.config import filename_arg
 
 # Python 2.X and 3.X compatibility
@@ -252,7 +253,7 @@ def mangle_test_address(address):
     except ValueError:
         pass
     # convert file path to dotted path
-    names[0] = names[0].replace("/", '.')
+    names[0] = names[0].replace(nodes.SEP, '.')
     names[0] = _py_ext_re.sub("", names[0])
     # put any params back
     names[-1] += possible_open_bracket + params
diff --git a/_pytest/main.py b/_pytest/main.py
index 4bddf1e2d..91083c85f 100644
--- a/_pytest/main.py
+++ b/_pytest/main.py
@@ -6,6 +6,7 @@ import os
 import sys
 
 import _pytest
+from _pytest import nodes
 import _pytest._code
 import py
 try:
@@ -14,8 +15,8 @@ except ImportError:
     from UserDict import DictMixin as MappingMixin
 
 from _pytest.config import directory_arg, UsageError, hookimpl
-from _pytest.runner import collect_one_node
 from _pytest.outcomes import exit
+from _pytest.runner import collect_one_node
 
 tracebackcutdir = py.path.local(_pytest.__file__).dirpath()
 
@@ -516,14 +517,14 @@ class FSCollector(Collector):
             rel = fspath.relto(parent.fspath)
             if rel:
                 name = rel
-            name = name.replace(os.sep, "/")
+            name = name.replace(os.sep, nodes.SEP)
         super(FSCollector, self).__init__(name, parent, config, session)
         self.fspath = fspath
 
     def _makeid(self):
         relpath = self.fspath.relto(self.config.rootdir)
-        if os.sep != "/":
-            relpath = relpath.replace(os.sep, "/")
+        if os.sep != nodes.SEP:
+            relpath = relpath.replace(os.sep, nodes.SEP)
         return relpath
 
 
diff --git a/_pytest/nodes.py b/_pytest/nodes.py
index c28c63180..7b6b695b5 100644
--- a/_pytest/nodes.py
+++ b/_pytest/nodes.py
@@ -1,6 +1,9 @@
 import py
 
 
+SEP = "/"
+
+
 def _splitnode(nodeid):
     """Split a nodeid into constituent 'parts'.
 
@@ -19,7 +22,7 @@ def _splitnode(nodeid):
     if nodeid == '':
         # If there is no root node at all, return an empty list so the caller's logic can remain sane
         return []
-    parts = nodeid.split(py.path.local.sep)
+    parts = nodeid.split(SEP)
     # Replace single last element 'test_foo.py::Bar::()' with multiple elements 'test_foo.py', 'Bar', '()'
     parts[-1:] = parts[-1].split("::")
     return parts
diff --git a/_pytest/terminal.py b/_pytest/terminal.py
index bb114391d..f56b966f3 100644
--- a/_pytest/terminal.py
+++ b/_pytest/terminal.py
@@ -13,6 +13,7 @@ import sys
 import time
 import platform
 
+from _pytest import nodes
 import _pytest._pluggy as pluggy
 
 
@@ -452,7 +453,7 @@ class TerminalReporter:
 
         if fspath:
             res = mkrel(nodeid).replace("::()", "")  # parens-normalization
-            if nodeid.split("::")[0] != fspath.replace("\\", "/"):
+            if nodeid.split("::")[0] != fspath.replace("\\", nodes.SEP):
                 res += " <- " + self.startdir.bestrelpath(fspath)
         else:
             res = "[location]"