diff --git a/core_me/tests/scanner_test.py b/core_me/tests/scanner_test.py
index 074e3e8c..f92bd201 100644
--- a/core_me/tests/scanner_test.py
+++ b/core_me/tests/scanner_test.py
@@ -7,7 +7,9 @@
 # which should be included with this package. The terms are also available at 
 # http://www.hardcoded.net/licenses/hs_license
 
+from hsutil import io
 from hsutil.path import Path
+from hsutil.testcase import TestCase
 
 from core.engine import getwords
 from ..scanner import *
@@ -22,11 +24,18 @@ class NamedObject(object):
 
 no = NamedObject
 
-def test_priorize_me():
-    # in ScannerME, bitrate goes first (right after is_ref) in priorization
-    s = ScannerME()
-    o1, o2 = no('foo'), no('foo')
-    o1.bitrate = 1
-    o2.bitrate = 2
-    [group] = s.GetDupeGroups([o1, o2])
-    assert group.ref is o2
\ No newline at end of file
+class ScannerTestFakeFiles(TestCase):
+    def setUp(self):
+        # This is a hack to avoid invalidating all previous tests since the scanner started to test
+        # for file existence before doing the match grouping.
+        self.mock(io, 'exists', lambda _: True)
+    
+    def test_priorize_me(self):
+        # in ScannerME, bitrate goes first (right after is_ref) in priorization
+        s = ScannerME()
+        o1, o2 = no('foo'), no('foo')
+        o1.bitrate = 1
+        o2.bitrate = 2
+        [group] = s.GetDupeGroups([o1, o2])
+        assert group.ref is o2
+