diff --git a/c_gen/templates/loci_classes.h b/c_gen/templates/loci_classes.h
index 3486055..12c07d1 100644
--- a/c_gen/templates/loci_classes.h
+++ b/c_gen/templates/loci_classes.h
@@ -25,11 +25,16 @@
 :: # EPL for the specific language governing permissions and limitations
 :: # under the EPL.
 ::
+:: import loxi_globals
 :: include('_copyright.c')
 ::
 #ifndef __LOCI_CLASSES_H__
 #define __LOCI_CLASSES_H__
 
+:: for uclass in loxi_globals.unified.classes:
+void ${uclass.name}_wire_object_id_get(of_object_t *obj, of_object_id_t *id);
+:: #endfor
+
 ${legacy_code}
 
 #endif