diff --git a/Lib/test/test_aifc.py b/Lib/test/test_aifc.py
index 9fec392..0aed908 100644
--- a/Lib/test/test_aifc.py
+++ b/Lib/test/test_aifc.py
@@ -27,7 +27,7 @@
     def test_skipunknown(self):
         #Issue 2245
         #This file contains chunk types aifc doesn't recognize.
-        f = aifc.open(self.sndfilepath)
+        self.f = aifc.open(self.sndfilepath)
 
     def test_params(self):
         f = self.f = aifc.open(self.sndfilepath)