diff --git a/src/pl/plpgsql/src/pl_comp.c b/src/pl/plpgsql/src/pl_comp.c
index 578cae5..f579d98 100644
--- a/src/pl/plpgsql/src/pl_comp.c
+++ b/src/pl/plpgsql/src/pl_comp.c
@@ -1940,11 +1940,12 @@ build_row_from_class(Oid classOid)
 	classStruct = RelationGetForm(rel);
 	relname = RelationGetRelationName(rel);
 
-	/* accept relation, sequence, view, or composite type entries */
+	/* accept relation, sequence, view, composite type or foreign table entries */
 	if (classStruct->relkind != RELKIND_RELATION &&
 		classStruct->relkind != RELKIND_SEQUENCE &&
 		classStruct->relkind != RELKIND_VIEW &&
-		classStruct->relkind != RELKIND_COMPOSITE_TYPE)
+		classStruct->relkind != RELKIND_COMPOSITE_TYPE &&
+		classStruct->relkind != RELKIND_FOREIGN_TABLE)
 		ereport(ERROR,
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("relation \"%s\" is not a table", relname)));