diff --git a/configshell/console.py b/configshell/console.py
index 8f72fa0..e73a27a 100644
--- a/configshell/console.py
+++ b/configshell/console.py
@@ -36,7 +36,7 @@ class Console(object):
     _escape = '\033['
     _ansi_format = _escape + '%dm%s'
     _ansi_reset = _escape + '0m'
-    _re_ansi_seq = re.compile('(\033\[..?m)')
+    _re_ansi_seq = re.compile(r'(\033\[..?m)')
 
     _ansi_styles = {'bold':      1,
                     'underline': 4,
diff --git a/configshell/shell.py b/configshell/shell.py
index 437186d..ec7a239 100644
--- a/configshell/shell.py
+++ b/configshell/shell.py
@@ -113,22 +113,22 @@ class ConfigShell(object):
 
         # Grammar of the command line
         command = locatedExpr(Word(alphanums + '_'))('command')
-        var = Word(alphanums + '?;&*$!#,=_\+/.<>()~@:-%[]')
+        var = Word(alphanums + r'?;&*$!#,=_\+/.<>()~@:-%[]')
         value = var
-        keyword = Word(alphanums + '_\-')
+        keyword = Word(alphanums + r'_\-')
         kparam = locatedExpr(keyword + Suppress('=') + Optional(value, default=''))('kparams*')
         pparam = locatedExpr(var)('pparams*')
         parameter = kparam | pparam
         parameters = OneOrMore(parameter)
         bookmark = Regex('@([A-Za-z0-9:_.]|-)+')
-        pathstd = Regex('([A-Za-z0-9:_.\[\]]|-)*' + '/' + '([A-Za-z0-9:_.\[\]/]|-)*') \
+        pathstd = Regex(r'([A-Za-z0-9:_.\[\]]|-)*' + '/' + r'([A-Za-z0-9:_.\[\]/]|-)*') \
                 | '..' | '.'
         path = locatedExpr(bookmark | pathstd | '*')('path')
         parser = Optional(path) + Optional(command) + Optional(parameters)
         self._parser = parser
 
         if tty:
-            readline.set_completer_delims('\t\n ~!#$^&(){}\|;\'",?')
+            readline.set_completer_delims('\t\n ~!#$^&(){}|;\'",?')
             readline.set_completion_display_matches_hook(
                 self._display_completions)