diff --git a/src/helma/objectmodel/db/IDGenerator.java b/src/helma/objectmodel/db/IDGenerator.java
index e7264401..be07a14f 100644
--- a/src/helma/objectmodel/db/IDGenerator.java
+++ b/src/helma/objectmodel/db/IDGenerator.java
@@ -43,6 +43,6 @@ public interface IDGenerator {
      * @param dbmap
      * @return
      */
-    public String generateID(DbMapping dbmap);
+    public String generateID(DbMapping dbmap) throws Exception;
 
 }