diff --git a/Tests/test_file_fpx.py b/Tests/test_file_fpx.py
index 35119a612..01b285efe 100644
--- a/Tests/test_file_fpx.py
+++ b/Tests/test_file_fpx.py
@@ -6,11 +6,16 @@ from PIL import FpxImagePlugin
 class TestFileFpx(PillowTestCase):
 
     def test_invalid_file(self):
+        # Test an invalid OLE file
         invalid_file = "Tests/images/flower.jpg"
-
         self.assertRaises(SyntaxError,
                           lambda: FpxImagePlugin.FpxImageFile(invalid_file))
 
+        # Test a valid OLE file, but not an FPX file
+        ole_file = "Tests/images/test-ole-file.doc"
+        self.assertRaises(SyntaxError,
+                          lambda: FpxImagePlugin.FpxImageFile(ole_file))
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Tests/test_file_mic.py b/Tests/test_file_mic.py
index 0a574422a..f0a2752a9 100644
--- a/Tests/test_file_mic.py
+++ b/Tests/test_file_mic.py
@@ -6,11 +6,16 @@ from PIL import MicImagePlugin
 class TestFileMic(PillowTestCase):
 
     def test_invalid_file(self):
+        # Test an invalid OLE file
         invalid_file = "Tests/images/flower.jpg"
-
         self.assertRaises(SyntaxError,
                           lambda: MicImagePlugin.MicImageFile(invalid_file))
 
+        # Test a valid OLE file, but not a MIC file
+        ole_file = "Tests/images/test-ole-file.doc"
+        self.assertRaises(SyntaxError,
+                          lambda: MicImagePlugin.MicImageFile(ole_file))
+
 
 if __name__ == '__main__':
     unittest.main()