diff --git a/kallithea/config/routing.py b/kallithea/config/routing.py
--- a/kallithea/config/routing.py
+++ b/kallithea/config/routing.py
@@ -154,9 +154,9 @@ def make_map(config):
         m.connect("edit_repo_group_perms", "/repo_groups/{group_name:.*?}/edit/permissions",
                   action="edit_repo_group_perms",
                   conditions=dict(method=["GET"], function=check_group))
-        m.connect("edit_repo_group_perms", "/repo_groups/{group_name:.*?}/edit/permissions",
+        m.connect("edit_repo_group_perms_update", "/repo_groups/{group_name:.*?}/edit/permissions",
                   action="update_perms",
-                  conditions=dict(method=["PUT"], function=check_group))
+                  conditions=dict(method=["POST"], function=check_group))
         m.connect("edit_repo_group_perms_delete", "/repo_groups/{group_name:.*?}/edit/permissions/delete",
                   action="delete_perms",
                   conditions=dict(method=["POST"], function=check_group))
diff --git a/kallithea/templates/admin/repo_groups/repo_group_edit_perms.html b/kallithea/templates/admin/repo_groups/repo_group_edit_perms.html
--- a/kallithea/templates/admin/repo_groups/repo_group_edit_perms.html
+++ b/kallithea/templates/admin/repo_groups/repo_group_edit_perms.html
@@ -1,4 +1,4 @@
-${h.form(url('edit_repo_group_perms', group_name=c.repo_group.group_name),method='put')}
+${h.form(url('edit_repo_group_perms', group_name=c.repo_group.group_name))}
 <div class="form">
    <div class="fields">
         <div class="field">