diff --git a/README.md b/README.md
index a2977da8..7c943900 100644
--- a/README.md
+++ b/README.md
@@ -176,6 +176,7 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `ls_lah` – adds -lah to ls;
 * `man` – change manual section;
 * `man_no_space` – fixes man commands without spaces, for example `mandiff`;
+* `mercurial` – fixes wrong `hg` commands;
 * `mkdir_p` – adds `-p` when you trying to create directory without parent;
 * `no_command` – fixes wrong console commands, for example `vom/vim`;
 * `no_such_file` – creates missing directories with `mv` and `cp` commands;
@@ -185,7 +186,7 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `python_execute` – appends missing `.py` when executing Python files;
 * `quotation_marks` – fixes uneven usage of `'` and `"` when containing args'
 * `rm_dir` – adds `-rf` when you trying to remove directory;
-* `sed` – adds missing '/' to `sed`'s `s` commands;
+* `sed_unterminated_s` – adds missing '/' to `sed`'s `s` commands;
 * `sl_ls` – changes `sl` to `ls`;
 * `ssh_known_hosts` – removes host from `known_hosts` on warning;
 * `sudo` – prepends `sudo` to previous command if it failed because of permissions;
diff --git a/tests/rules/test_tmux.py b/tests/rules/test_tmux.py
index 22111a70..ebbe6736 100644
--- a/tests/rules/test_tmux.py
+++ b/tests/rules/test_tmux.py
@@ -16,4 +16,4 @@ def test_match(tmux_ambiguous):
 
 def test_get_new_command(tmux_ambiguous):
     assert get_new_command(Command('tmux list', stderr=tmux_ambiguous), None)\
-        == 'tmux list-buffers'
+        == 'tmux list-keys'
diff --git a/thefuck/rules/sudo.py b/thefuck/rules/sudo.py
index 1a87ffec..31687549 100644
--- a/thefuck/rules/sudo.py
+++ b/thefuck/rules/sudo.py
@@ -13,7 +13,8 @@ patterns = ['permission denied',
             'must be root',
             'need to be root',
             'need root',
-            'only root can do that']
+            'only root can do that',
+            'authentication is required']
 
 
 def match(command, settings):
diff --git a/thefuck/rules/tmux.py b/thefuck/rules/tmux.py
index 2fa2552a..683ee46e 100644
--- a/thefuck/rules/tmux.py
+++ b/thefuck/rules/tmux.py
@@ -1,3 +1,4 @@
+from thefuck.utils import get_closest
 import re
 
 
@@ -8,7 +9,12 @@ def match(command, settings):
 
 
 def get_new_command(command, settings):
-    cmd = re.match(r"ambiguous command: (.*), could be: ([^, \n]*)",
+    cmd = re.match(r"ambiguous command: (.*), could be: (.*)",
                    command.stderr)
 
-    return command.script.replace(cmd.group(1), cmd.group(2))
+    old_cmd = cmd.group(1)
+    suggestions = [cmd.strip() for cmd in cmd.group(2).split(',')]
+
+    new_cmd = get_closest(old_cmd, suggestions)
+
+    return command.script.replace(old_cmd, new_cmd)