diff --git a/genotyping/src/org/labkey/genotyping/GenotypingContainerListener.java b/genotyping/src/org/labkey/genotyping/GenotypingContainerListener.java
index babd6d79..01cfd325 100644
--- a/genotyping/src/org/labkey/genotyping/GenotypingContainerListener.java
+++ b/genotyping/src/org/labkey/genotyping/GenotypingContainerListener.java
@@ -20,7 +20,7 @@
 import org.labkey.api.data.ContainerManager;
 import org.labkey.api.security.User;
 
-public class GenotypingContainerListener extends ContainerManager.AbstractContainerListener
+public class GenotypingContainerListener implements ContainerManager.ContainerListener
 {
     @Override
     public void containerDeleted(Container c, User user)