diff --git a/skeletons/ANY.h b/skeletons/ANY.h
index 9cc0956..7d5f369 100644
--- a/skeletons/ANY.h
+++ b/skeletons/ANY.h
@@ -19,6 +19,7 @@
 } ANY_t;
 
 extern asn_TYPE_descriptor_t asn_DEF_ANY;
+extern asn_TYPE_operation_t asn_OP_ANY;
 extern asn_OCTET_STRING_specifics_t asn_SPC_ANY_specs;
 
 asn_struct_free_f ANY_free;