diff --git a/src/backend/catalog/dependency.c b/src/backend/catalog/dependency.c
index c1212e9..0107c53 100644
--- a/src/backend/catalog/dependency.c
+++ b/src/backend/catalog/dependency.c
@@ -127,7 +127,6 @@ typedef struct
  * See also getObjectClass().
  */
 static const Oid object_classes[MAX_OCLASS] = {
-	RelationRelationId,			/* OCLASS_CLASS */
 	ProcedureRelationId,		/* OCLASS_PROC */
 	TypeRelationId,				/* OCLASS_TYPE */
 	CastRelationId,				/* OCLASS_CAST */
@@ -158,7 +157,9 @@ static const Oid object_classes[MAX_OCLASS] = {
 	DefaultAclRelationId,		/* OCLASS_DEFACL */
 	ExtensionRelationId,		/* OCLASS_EXTENSION */
 	EventTriggerRelationId,		/* OCLASS_EVENT_TRIGGER */
-	PolicyRelationId			/* OCLASS_POLICY */
+	PolicyRelationId,			/* OCLASS_POLICY */
+	TransformRelationId,		/* OCLASS_POLICY */
+	RelationRelationId			/* OCLASS_CLASS */
 };
 
 
diff --git a/src/include/catalog/dependency.h b/src/include/catalog/dependency.h
index 5da18c2..6f4802d 100644
--- a/src/include/catalog/dependency.h
+++ b/src/include/catalog/dependency.h
@@ -112,11 +112,10 @@ typedef struct ObjectAddresses ObjectAddresses;
 
 /*
  * This enum covers all system catalogs whose OIDs can appear in
- * pg_depend.classId or pg_shdepend.classId.
+ * pg_depend.classId or pg_shdepend.classId.  See also object_classes[].
  */
 typedef enum ObjectClass
 {
-	OCLASS_CLASS,				/* pg_class */
 	OCLASS_PROC,				/* pg_proc */
 	OCLASS_TYPE,				/* pg_type */
 	OCLASS_CAST,				/* pg_cast */
@@ -149,6 +148,11 @@ typedef enum ObjectClass
 	OCLASS_EVENT_TRIGGER,		/* pg_event_trigger */
 	OCLASS_POLICY,				/* pg_policy */
 	OCLASS_TRANSFORM,			/* pg_transform */
+	/*
+	 * Keep this previous-to-last, see
+	 * https://www.postgresql.org/message-id/
+	 */
+	OCLASS_CLASS,				/* pg_class */
 	MAX_OCLASS					/* MUST BE LAST */
 } ObjectClass;