Index: openjpa-kernel/src/main/java/org/apache/openjpa/meta/ClassMetaData.java
===================================================================
--- openjpa-kernel/src/main/java/org/apache/openjpa/meta/ClassMetaData.java	(revision 540989)
+++ openjpa-kernel/src/main/java/org/apache/openjpa/meta/ClassMetaData.java	(working copy)
@@ -1945,7 +1945,7 @@
                     throw new MetaDataException(_loc.get("invalid-id",
                         _type, fmds[i].getName()));
                 m = Reflection.findSetter(oid, fmds[i].getName(),
-                    fmds[i].getDeclaredType(), false);
+                    fmds[i].getObjectIdFieldType(), false);
                 if (m == null || m.getReturnType() != void.class)
                     throw new MetaDataException(_loc.get("invalid-id",
                         _type, fmds[i].getName()));