diff --git a/src/main/java/de/tilman/transactions/DatabaseController.java b/src/main/java/de/tilman/transactions/DatabaseController.java
index 50837c4..3c73472 100644
--- a/src/main/java/de/tilman/transactions/DatabaseController.java
+++ b/src/main/java/de/tilman/transactions/DatabaseController.java
@@ -47,6 +47,7 @@ public class DatabaseController {
 		Class.forName("org.hsqldb.jdbcDriver");
 		
 		connection = DriverManager.getConnection(DB_URL, DB_LOGIN, DB_PASSWORT);
+		connection.setAutoCommit(true);
 		statement = connection.createStatement();
 
 		// prepare SQL statements