diff --git a/engine/schema/src/com/cloud/upgrade/dao/Upgrade30xBase.java b/engine/schema/src/com/cloud/upgrade/dao/Upgrade30xBase.java
index 5a370f00fe0..2ca562aca20 100644
--- a/engine/schema/src/com/cloud/upgrade/dao/Upgrade30xBase.java
+++ b/engine/schema/src/com/cloud/upgrade/dao/Upgrade30xBase.java
@@ -27,7 +27,7 @@ import org.apache.log4j.Logger;
 
 import com.cloud.utils.exception.CloudRuntimeException;
 
-public abstract class Upgrade30xBase extends LegacyDbUpgrade implements DbUpgrade {
+public abstract class Upgrade30xBase extends LegacyDbUpgrade {
 
     final static Logger s_logger = Logger.getLogger(Upgrade30xBase.class);