diff --git a/doc/bugs/--git-dir_and_--work-tree_options.mdwn b/doc/bugs/on--git-dir_and_--work-tree_options.mdwn
similarity index 100%
rename from doc/bugs/--git-dir_and_--work-tree_options.mdwn
rename to doc/bugs/on--git-dir_and_--work-tree_options.mdwn