diff --git a/tests/validators/tests.py b/tests/validators/tests.py
index ba7038094c..d7888ef9a7 100644
--- a/tests/validators/tests.py
+++ b/tests/validators/tests.py
@@ -248,13 +248,19 @@ TEST_DATA = [
     (RegexValidator('a', flags=re.IGNORECASE), 'A', None),
 
     (FileExtensionValidator(['txt']), ContentFile('contents', name='fileWithUnsupportedExt.jpg'), ValidationError),
-    (FileExtensionValidator(['txt']), ContentFile('contents', name='fileWithNoExtenstion'), ValidationError),
+    (FileExtensionValidator(['txt']), ContentFile('contents', name='fileWithUnsupportedExt.JPG'), ValidationError),
+    (FileExtensionValidator(['txt']), ContentFile('contents', name='fileWithNoExtension'), ValidationError),
+    (FileExtensionValidator(['']), ContentFile('contents', name='fileWithAnExtension.txt'), ValidationError),
     (FileExtensionValidator([]), ContentFile('contents', name='file.txt'), ValidationError),
+
+    (FileExtensionValidator(['']), ContentFile('contents', name='fileWithNoExtension'), None),
     (FileExtensionValidator(['txt']), ContentFile('contents', name='file.txt'), None),
+    (FileExtensionValidator(['txt']), ContentFile('contents', name='file.TXT'), None),
     (FileExtensionValidator(), ContentFile('contents', name='file.jpg'), None),
 
     (validate_image_file_extension, ContentFile('contents', name='file.jpg'), None),
     (validate_image_file_extension, ContentFile('contents', name='file.png'), None),
+    (validate_image_file_extension, ContentFile('contents', name='file.PNG'), None),
     (validate_image_file_extension, ContentFile('contents', name='file.txt'), ValidationError),
     (validate_image_file_extension, ContentFile('contents', name='file'), ValidationError),
 ]