--- a/hgext/graphlog.py
+++ b/hgext/graphlog.py
@@ -141,7 +141,7 @@ def get_revs(repo, rev_opt):
     else:
         return (repo.changelog.count() - 1, 0)
 
-def graphlog(ui, repo, *args, **opts):
+def graphlog(ui, repo, **opts):
     """show revision history alongside an ASCII revision graph
 
     Print a revision history alongside a revision graph drawn with

--- a/tests/test-glog
+++ b/tests/test-glog
@@ -138,3 +138,6 @@ hg glog -q
 
 echo % glog
 hg glog
+
+echo % unused arguments
+hg glog -q foo || echo failed

--- a/tests/test-glog.out
+++ b/tests/test-glog.out
@@ -307,3 +307,9 @@ o  changeset:   0:7aa22e58e8c1
    date:        Thu Jan 01 00:00:00 1970 +0000
    summary:     (0) root
 
+% unused arguments
+hg glog: invalid arguments
+hg glog [OPTION]...
+
+show revision history alongside an ASCII revision graph
+failed