diff --git a/src/include/catalog/pg_db_role_setting.h b/src/include/catalog/pg_db_role_setting.h
index 45d478e9e7..997a43e373 100644
--- a/src/include/catalog/pg_db_role_setting.h
+++ b/src/include/catalog/pg_db_role_setting.h
@@ -50,9 +50,6 @@ DECLARE_TOAST_WITH_MACRO(pg_db_role_setting, 2966, 2967, PgDbRoleSettingToastTab
 
 DECLARE_UNIQUE_INDEX_PKEY(pg_db_role_setting_databaseid_rol_index, 2965, DbRoleSettingDatidRolidIndexId, on pg_db_role_setting using btree(setdatabase oid_ops, setrole oid_ops));
 
-/*
- * prototypes for functions in pg_db_role_setting.h
- */
 extern void AlterSetting(Oid databaseid, Oid roleid, VariableSetStmt *setstmt);
 extern void DropSetting(Oid databaseid, Oid roleid);
 extern void ApplySetting(Snapshot snapshot, Oid databaseid, Oid roleid,
diff --git a/src/include/catalog/pg_enum.h b/src/include/catalog/pg_enum.h
index 9c6deddc6a..497a498e5b 100644
--- a/src/include/catalog/pg_enum.h
+++ b/src/include/catalog/pg_enum.h
@@ -47,9 +47,6 @@ DECLARE_UNIQUE_INDEX_PKEY(pg_enum_oid_index, 3502, EnumOidIndexId, on pg_enum us
 DECLARE_UNIQUE_INDEX(pg_enum_typid_label_index, 3503, EnumTypIdLabelIndexId, on pg_enum using btree(enumtypid oid_ops, enumlabel name_ops));
 DECLARE_UNIQUE_INDEX(pg_enum_typid_sortorder_index, 3534, EnumTypIdSortOrderIndexId, on pg_enum using btree(enumtypid oid_ops, enumsortorder float4_ops));
 
-/*
- * prototypes for functions in pg_enum.c
- */
 extern void EnumValuesCreate(Oid enumTypeOid, List *vals);
 extern void EnumValuesDelete(Oid enumTypeOid);
 extern void AddEnumLabel(Oid enumTypeOid, const char *newVal,
diff --git a/src/include/catalog/pg_namespace.h b/src/include/catalog/pg_namespace.h
index ba56e44d61..98eb29d0be 100644
--- a/src/include/catalog/pg_namespace.h
+++ b/src/include/catalog/pg_namespace.h
@@ -56,9 +56,6 @@ DECLARE_TOAST(pg_namespace, 4163, 4164);
 DECLARE_UNIQUE_INDEX(pg_namespace_nspname_index, 2684, NamespaceNameIndexId, on pg_namespace using btree(nspname name_ops));
 DECLARE_UNIQUE_INDEX_PKEY(pg_namespace_oid_index, 2685, NamespaceOidIndexId, on pg_namespace using btree(oid oid_ops));
 
-/*
- * prototypes for functions in pg_namespace.c
- */
 extern Oid	NamespaceCreate(const char *nspName, Oid ownerId, bool isTemp);
 
 #endif							/* PG_NAMESPACE_H */
diff --git a/src/include/catalog/pg_range.h b/src/include/catalog/pg_range.h
index faa57e8cea..0918c4317a 100644
--- a/src/include/catalog/pg_range.h
+++ b/src/include/catalog/pg_range.h
@@ -60,10 +60,6 @@ typedef FormData_pg_range *Form_pg_range;
 DECLARE_UNIQUE_INDEX_PKEY(pg_range_rngtypid_index, 3542, RangeTypidIndexId, on pg_range using btree(rngtypid oid_ops));
 DECLARE_UNIQUE_INDEX(pg_range_rngmultitypid_index, 2228, RangeMultirangeTypidIndexId, on pg_range using btree(rngmultitypid oid_ops));
 
-/*
- * prototypes for functions in pg_range.c
- */
-
 extern void RangeCreate(Oid rangeTypeOid, Oid rangeSubType, Oid rangeCollation,
 						Oid rangeSubOpclass, RegProcedure rangeCanonical,
 						RegProcedure rangeSubDiff, Oid multirangeTypeOid);