diff --git a/pandora_console/ChangeLog b/pandora_console/ChangeLog
index 2789736fad..5a7a75f2dc 100644
--- a/pandora_console/ChangeLog
+++ b/pandora_console/ChangeLog
@@ -1,3 +1,12 @@
+2013-10-13  Junichi Satoh  <junichi@rworks.jp>
+
+	* godmode/alerts/alert_commands.php, include/functions_io.php: Fixed
+	that unexpected fields descriptions are set when multi-byte characters
+	are entered.
+	It is caused by json_encode(). It escapes unicode used by multi-byte
+	characters. I've created io_json_mb_encode(), replacement of
+	json_encode() for multi-byte characters.
+
 2013-10-12  Junichi Satoh  <junichi@rworks.jp>
 
 	* include/help/ja/help_reporting_advanced_tab.php,
diff --git a/pandora_console/godmode/alerts/alert_commands.php b/pandora_console/godmode/alerts/alert_commands.php
index 143d445b67..4847e19be0 100644
--- a/pandora_console/godmode/alerts/alert_commands.php
+++ b/pandora_console/godmode/alerts/alert_commands.php
@@ -149,8 +149,8 @@ if ($create_command) {
 		$info_fields .= ' Field'.$i.': ' . $fields_values[$i - 1];
 	}
 	
-	$values['fields_values'] = json_encode($fields_values);
-	$values['fields_descriptions'] = json_encode($fields_descriptions);
+	$values['fields_values'] = io_json_mb_encode($fields_values);
+	$values['fields_descriptions'] = io_json_mb_encode($fields_descriptions);
 	$values['description'] = $description;
 	
 	$name_check = db_get_value ('name', 'talert_commands', 'name', $name);
@@ -200,8 +200,8 @@ if ($update_command) {
 		$info_fields .= ' Field'.$i.': ' . $fields_values[$i - 1];
 	}
 	
-	$values['fields_values'] = json_encode($fields_values);
-	$values['fields_descriptions'] = json_encode($fields_descriptions);
+	$values['fields_values'] = io_json_mb_encode($fields_values);
+	$values['fields_descriptions'] = io_json_mb_encode($fields_descriptions);
 	
 	$values['name'] = $name;
 	$values['command'] = $command;
diff --git a/pandora_console/include/functions_io.php b/pandora_console/include/functions_io.php
index ad4c0995bb..0b19a79547 100755
--- a/pandora_console/include/functions_io.php
+++ b/pandora_console/include/functions_io.php
@@ -415,4 +415,18 @@ function __ ($string /*, variable arguments */) {
 	return vsprintf ($l10n->translate ($string), $args);
 }
 
+/*
+ * json_encode for multibyte characters.
+ *
+ * @param string Text string to be encoded.
+*/
+function io_json_mb_encode($string){
+	$v = json_encode($string);
+	$v = preg_replace_callback("/\\\\u([0-9a-zA-Z]{4})/",
+		create_function('$matches', 'return mb_convert_encoding(pack("H*", $matches[1]), "UTF-8", "UTF-16");'
+		), $v);
+	$v = preg_replace('/\\\\\//', '/', $v);
+	return $v;
+}
+
 ?>