diff --git a/lexicon.module b/lexicon.module
index 61d9fbb..dabb6bf 100644
--- a/lexicon.module
+++ b/lexicon.module
@@ -1289,10 +1289,10 @@ function _lexicon_alphabar_instruction_default() {
  */
 function _lexicon_is_boundary($char) {
   if (extension_loaded('mbstring')) {
-    return (mb_strpos("!\"#\$%&'()*+,-./:;<=>?@[\]^_`{|}~� ��������� \t\n\r", $char) !== FALSE);
+    return (mb_strpos("!\"#\$%&'()*+,-./:;<=>?@[\]^_`{|}~� ��������� \t\n\r\xc2\xa0", $char) !== FALSE);
   }
   else {
-    return (strpos("!\"#\$%&'()*+,-./:;<=>?@[\]^_`{|}~� ��������� \t\n\r", $char) !== FALSE);
+    return (strpos("!\"#\$%&'()*+,-./:;<=>?@[\]^_`{|}~� ��������� \t\n\r\xc2\xa0", $char) !== FALSE);
   }
 }