diff --git a/kittengroomer/helpers.py b/kittengroomer/helpers.py
index 990f899..9604c49 100644
--- a/kittengroomer/helpers.py
+++ b/kittengroomer/helpers.py
@@ -55,6 +55,7 @@ class FileBase(object):
         else:
             try:
                 mt = magic.from_file(self.src_path, mime=True)
+                # magic will always return something, even if it's just 'data'
             except UnicodeEncodeError as e:
                 # FIXME: The encoding of the file is broken (possibly UTF-16)
                 mt = ''