diff --git a/image_list.py b/image_list.py
index 515c466..21beeb2 100755
--- a/image_list.py
+++ b/image_list.py
@@ -42,7 +42,7 @@ def setup_options():
                      help="Return a list of small files, smaller than -m INT. This option will flip the 'Add new files' option. [%(default)s]")
     parser.add_argument("--similar",type=str,dest="similarity",default=None,
                      help="Search list for similar images. Value 0-255 for similarity threshold. 0=high similarity. "+
-                     "If value is a filename, search similar to that image.")
+                     "If value is a filename, search similar to that image. Append with ,value to prevent printing of too ddeiffering images")
     parser.add_argument("--viewer",type=str,dest="viewer",default=None,
                      help="Program to view images, %%f refers to filename(s)")
     parser.add_argument("-x",action="append",dest="exclude",default=[],