diff --git a/inc/functions.php b/inc/functions.php
index dd02ce79..e72708fd 100755
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -1332,23 +1332,26 @@ function getPages($mod=false) {
 
 // Stolen with permission from PlainIB (by Frank Usrs)
 function make_comment_hex($str) {
+	global $config;
 	// remove cross-board citations
 	// the numbers don't matter
-	$str = preg_replace('!>>>/[A-Za-z0-9]+/!', '', $str);
+	$str = preg_replace("!>>>/[A-Za-z0-9]+/!", '', $str);
 
-	if (function_exists('iconv')) {
-		// remove diacritics and other noise
-		// FIXME: this removes cyrillic entirely
-		$oldstr = $str;
-		$str = @iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $str);
-		if (!$str) $str = $oldstr;
+	if ($config['robot_enable']) {
+		if (function_exists('iconv')) {
+			// remove diacritics and other noise
+			// FIXME: this removes cyrillic entirely
+			$oldstr = $str;
+			$str = @iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $str);
+			if (!$str) $str = $oldstr;
+		}
+
+		$str = strtolower($str);
+
+		// strip all non-alphabet characters
+		$str = preg_replace('/[^a-z]/', '', $str);
 	}
 
-	$str = strtolower($str);
-
-	// strip all non-alphabet characters
-	$str = preg_replace('/[^a-z]/', '', $str);
-
 	return md5($str);
 }