diff --git a/application/config/migration.php b/application/config/migration.php
index e2b1e4470..42282860f 100644
--- a/application/config/migration.php
+++ b/application/config/migration.php
@@ -22,7 +22,7 @@ $config['migration_enabled'] = TRUE;
 |
 */
 
-$config['migration_version'] = 226;
+$config['migration_version'] = 227;
 
 /*
 |--------------------------------------------------------------------------
diff --git a/application/migrations/227_extend_sig_info.php b/application/migrations/227_extend_sig_info.php
new file mode 100644
index 000000000..17d10aaff
--- /dev/null
+++ b/application/migrations/227_extend_sig_info.php
@@ -0,0 +1,16 @@
+<?php
+
+class Migration_extend_sig_info  extends CI_Migration
+{
+
+	public function up() {
+		$this->db->query("ALTER TABLE ".$this->config->item('table_name')." CHANGE COLUMN COL_SIG_INFO COL_SIG_INFO VARCHAR(128) NULL DEFAULT NULL");
+		$this->db->query("ALTER TABLE ".$this->config->item('table_name')." CHANGE COLUMN COL_MY_SIG_INFO COL_MY_SIG_INFO VARCHAR(128) NULL DEFAULT NULL");
+		$this->db->query("ALTER TABLE ".$this->config->item('table_name')." CHANGE COLUMN COL_MY_SIG COL_MY_SIG VARCHAR(64) NULL DEFAULT NULL");
+		$this->db->query("ALTER TABLE station_profile CHANGE COLUMN station_sig_info station_sig_info vARCHAR(128) NULL DEFAULT NULL");
+		$this->db->query("ALTER TABLE station_profile CHANGE COLUMN station_sig station_sig vARCHAR(64) NULL DEFAULT NULL");
+	}
+
+	public function down() {
+	}
+}