diff --git a/src/com/rjconsultores/ventaboletos/FlyWay.java b/src/com/rjconsultores/ventaboletos/FlyWay.java
index c6a4506e2..3308d80f9 100644
--- a/src/com/rjconsultores/ventaboletos/FlyWay.java
+++ b/src/com/rjconsultores/ventaboletos/FlyWay.java
@@ -40,6 +40,10 @@ public class FlyWay {
 	
 	private String location = "db.migration";
 	
+	private FlyWay() {
+		
+	}
+	
 	public static FlyWay getInstance() {
 		return INSTANCE;
 	}
diff --git a/src/db/migration/V20181207_1510__mantis12843.sql b/src/db/migration/V20181207_1510__mantis12843.sql
new file mode 100644
index 000000000..0cceb201d
--- /dev/null
+++ b/src/db/migration/V20181207_1510__mantis12843.sql
@@ -0,0 +1,7 @@
+declare
+    column_exists exception;
+    pragma exception_init (column_exists , -01430);
+begin
+    execute immediate 'ALTER TABLE BPE ADD (DHREFERENCIA VARCHAR2(25 BYTE))';
+    exception when column_exists then null;
+end;
\ No newline at end of file