diff --git a/include/functions_search.inc.php b/include/functions_search.inc.php
index b7ea5b4de..43efbe163 100644
--- a/include/functions_search.inc.php
+++ b/include/functions_search.inc.php
@@ -1709,8 +1709,8 @@ function split_allwords($raw_allwords)
 
   if (!preg_match('/^\s*$/', $raw_allwords))
   {
-    $drop_char_match   = array('-','^','$',';','#','&','(',')','<','>','`','\'','"','|',',','@','_','?','%','~','.','[',']','{','}',':','\\','/','=','\'','!','*');
-    $drop_char_replace = array(' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','', '',  ' ',' ',' ',' ','', ' ',' ',' ',' ',' ',' ',' ',' ',' ','' , ' ',' ',' ', ' ',' ');
+    $drop_char_match   = array('^','$',';','#','&','(',')','<','>','`','\'','"','|',',','@','?','%','~','.','[',']','{','}',':','\\','/','=','\'','!','*');
+    $drop_char_replace = array(' ',' ',' ',' ',' ',' ',' ',' ',' ','', '',  ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','' , ' ',' ',' ', ' ',' ');
 
     // Split words
     $words = array_unique(