diff --git a/exv.py b/exv.py
index d856d06..3ebd207 100755
--- a/exv.py
+++ b/exv.py
@@ -58,7 +58,7 @@ def extractor(input_files, start, end, recursive, extensions):
         input_files = files
 
     for input_file in input_files:
-        exif_dict = usefull_exif
+        exif_dict = usefull_exif.copy()
         if not isfile(input_file):
             raise ValueError("{} doesn't exist here.".format(input_file))
         exif_dict.update({'file': input_file})