diff --git a/brename.py b/brename.py
index 984f9cc..7376489 100644
--- a/brename.py
+++ b/brename.py
@@ -38,16 +38,30 @@ underscore = '_'
 excise = stringtools.excise
 title = stringtools.title_capitalize
 
+def natural_sorter(x):
+    '''
+    Thank you Mark Byers
+    http://stackoverflow.com/a/11150413
+    '''
+    convert = lambda text: int(text) if text.isdigit() else text.lower()
+    alphanum_key = lambda key: [convert(c) for c in re.split(r'([0-9]+)', key)]
+    return alphanum_key(x)
+
 def unicode_normalize(s):
     return unicodedata.normalize('NFC', s)
 
-def brename(transformation, autoyes=False, recurse=False):
+def brename(transformation, autoyes=False, do_naturalsort=False, recurse=False):
     if recurse:
         walker = spinal.walk_generator('.', yield_files=True, yield_directories=True)
         olds = [x.absolute_path for x in walker]
     else:
         olds = [os.path.join(os.getcwd(), x) for x in os.listdir('.')]
 
+    if do_naturalsort:
+        olds.sort(key=natural_sorter)
+    else:
+        olds.sort()
+
     pairs = []
     for (index, old) in enumerate(olds):
         new = old
@@ -97,7 +111,12 @@ def loop(pairs, dry=False):
             os.rename(old, new)
 
 def brename_argparse(args):
-    brename(args.transformation, autoyes=args.autoyes, recurse=args.recurse)
+    return brename(
+        args.transformation,
+        autoyes=args.autoyes,
+        do_naturalsort=args.do_naturalsort,
+        recurse=args.recurse,
+    )
 
 def main(argv):
     parser = argparse.ArgumentParser(description=__doc__)
@@ -105,6 +124,7 @@ def main(argv):
     parser.add_argument('transformation', help='python command using x as variable name')
     parser.add_argument('-y', '--yes', dest='autoyes', action='store_true', help='accept results without confirming')
     parser.add_argument('--recurse', dest='recurse', action='store_true', help='operate on subdirectories also')
+    parser.add_argument('--naturalsort', dest='do_naturalsort', action='store_true')
     parser.set_defaults(func=brename_argparse)
 
     args = parser.parse_args(argv)
diff --git a/fileprefix.py b/fileprefix.py
deleted file mode 100644
index a23d4a2..0000000
--- a/fileprefix.py
+++ /dev/null
@@ -1,109 +0,0 @@
-'''
-When you run this file from the commandline given a single argument, all
-of the files in the current working directory will be renamed in the format
-{argument}_{count} where argument is your cmd input and count is a zero-padded
-integer that counts each file in the folder.
-'''
-
-import argparse
-import os
-import re
-import sys
-
-from voussoirkit import interactive
-from voussoirkit import pathclass
-from voussoirkit import safeprint
-
-IGNORE_EXTENSIONS = ['py', 'lnk', 'ini']
-
-
-def natural_sorter(x):
-    '''
-    Thank you Mark Byers
-    http://stackoverflow.com/a/11150413
-    '''
-    convert = lambda text: int(text) if text.isdigit() else text.lower()
-    alphanum_key = lambda key: [convert(c) for c in re.split('([0-9]+)', key)]
-    return alphanum_key(x)
-
-def fileprefix(
-        prefix='',
-        sep='_',
-        ctime=False,
-        autoyes=False,
-        one_index=False,
-    ):
-    current_directory = pathclass.cwd()
-
-    prefix = prefix.strip()
-    if prefix == ':':
-        prefix = current_directory.basename + ' - '
-    elif prefix != '':
-        prefix += sep
-
-    filepaths = current_directory.listdir()
-    filepaths = [f for f in filepaths if f.is_file]
-    filepaths = [f for f in filepaths if f.extension not in IGNORE_EXTENSIONS]
-
-    try:
-        pyfile = pathclass.Path(__file__)
-        filepaths.remove(pyfile)
-    except ValueError:
-        pass
-
-    # trust me on this.
-    zeropadding = len(str(len(filepaths)))
-    zeropadding = max(2, zeropadding)
-    zeropadding = str(zeropadding)
-
-    format = '{{prefix}}{{index:0{pad}d}}{{extension}}'.format(pad=zeropadding)
-
-    if ctime:
-        print('Sorting by time')
-        filepaths.sort(key=lambda x: x.stat.st_ctime)
-    else:
-        print('Sorting by name')
-        filepaths.sort(key=lambda x: natural_sorter(x.basename))
-
-    rename_pairs = []
-
-    start_index = 1 if one_index else 0
-    for (index, filepath) in enumerate(filepaths, start_index):
-        extension = filepath.extension.with_dot
-
-        newname = format.format(prefix=prefix, index=index, extension=extension)
-        if filepath.basename != newname:
-            rename_pairs.append((filepath.absolute_path, newname))
-    for (oldname, newname) in rename_pairs:
-        message = f'{oldname} -> {newname}'
-        safeprint.safeprint(message)
-
-    if autoyes or interactive.getpermission('Is this correct?'):
-        for (oldname, newname) in rename_pairs:
-            os.rename(oldname, newname)
-
-
-def fileprefix_argparse(args):
-    return fileprefix(
-        autoyes=args.autoyes,
-        ctime=args.ctime,
-        one_index=args.one_index,
-        prefix=args.prefix,
-        sep=args.sep,
-    )
-
-def main(argv):
-    parser = argparse.ArgumentParser()
-
-    parser.add_argument('prefix', nargs='?', default='')
-    parser.add_argument('--sep', dest='sep', default=' ', help='the character between the prefix and remainder')
-    parser.add_argument('--ctime', dest='ctime', action='store_true', help='sort by ctime instead of filename')
-    parser.add_argument('-y', '--yes', dest='autoyes', action='store_true', help='accept results without confirming')
-    parser.add_argument('-1', dest='one_index', action='store_true')
-    parser.set_defaults(func=fileprefix_argparse)
-
-    args = parser.parse_args(argv)
-    return args.func(args)
-
-if __name__ == '__main__':
-    raise SystemExit(main(sys.argv[1:]))