2 files changed, 6 insertions, 2 deletions
diff --git a/src/engine/SCons/Node/FS.py b/src/engine/SCons/Node/FS.py
index ceec696..810ede7 100644
--- a/src/engine/SCons/Node/FS.py
+++ b/src/engine/SCons/Node/FS.py
@@ -1432,10 +1432,10 @@ class Dir(Base):
             except OSError:
                 pass
             else:
-                for entry in entries:
+                for entry in map(_my_normcase, entries):
                     d[entry] = 1
             self.on_disk_entries = d
-        return d.has_key(name)
+        return d.has_key(_my_normcase(name))
 
     def srcdir_list(self):
         """__cacheable__"""
diff --git a/src/engine/SCons/Node/FSTests.py b/src/engine/SCons/Node/FSTests.py
index 71fb3ef..565384f 100644
--- a/src/engine/SCons/Node/FSTests.py
+++ b/src/engine/SCons/Node/FSTests.py
@@ -1455,11 +1455,15 @@ class DirTestCase(_tempdirTestCase):
 
         test.subdir('d')
         test.write(['d', 'exists'], "d/exists\n")
+        test.write(['d', 'Case-Insensitive'], "d/Case-Insensitive\n")
 
         d = self.fs.Dir('d')
         assert d.entry_exists_on_disk('exists')
         assert not d.entry_exists_on_disk('does_not_exist')
 
+        if os.path.normcase("TeSt") != os.path.normpath("TeSt") or sys.platform == "cygwin":
+            assert d.entry_exists_on_disk('case-insensitive')
+
     def test_srcdir_list(self):
         """Test the Dir.srcdir_list() method
         """