diff --git a/wp2git.py b/wp2git.py
index 74d62ec..9cf97e4 100755
--- a/wp2git.py
+++ b/wp2git.py
@@ -19,14 +19,16 @@ def sanitize(s):
 def parse_args():
     p = argparse.ArgumentParser(description='Create a git repository with the history of the specified Wikipedia article.')
     p.add_argument('article_name')
-    g=p.add_mutually_exclusive_group()
+    g2 = p.add_argument_group('Output options')
+    g=g2.add_mutually_exclusive_group()
     g.add_argument('-n', '--no-import', dest='doimport', default=True, action='store_false',
                    help="Don't invoke git fast-import; only generate fast-import data stream")
     g.add_argument('-b', '--bare', action='store_true', help="Import to a bare repository (no working tree)")
-    p.add_argument('-o', '--out', help='Output directory or fast-import stream file')
-    g=p.add_mutually_exclusive_group()
+    g2.add_argument('-o', '--out', help='Output directory or fast-import stream file')
+    g2 = p.add_argument_group('MediaWiki site selection')
+    g=g2.add_mutually_exclusive_group()
     g.add_argument('--lang', default=lang, help='Wikipedia language code (default %(default)s)')
-    g.add_argument('--site', help='Alternate site (e.g. http://commons.wikimedia.org[/w/])')
+    g.add_argument('--site', help='Alternate MediaWiki site (e.g. http://commons.wikimedia.org[/w/])')
 
     args = p.parse_args()
     if not args.doimport: