diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c
index 95557d7..5c4d113 100644
--- a/src/backend/optimizer/prep/prepunion.c
+++ b/src/backend/optimizer/prep/prepunion.c
@@ -1832,7 +1832,7 @@ make_inh_translation_list(Relation oldrelation, Relation newrelation,
 		 */
 		if (old_attno < newnatts &&
 			(att = TupleDescAttr(new_tupdesc, old_attno)) != NULL &&
-			!att->attisdropped && att->attinhcount != 0 &&
+			!att->attisdropped &&
 			strcmp(attname, NameStr(att->attname)) == 0)
 			new_attno = old_attno;
 		else
@@ -1840,7 +1840,7 @@ make_inh_translation_list(Relation oldrelation, Relation newrelation,
 			for (new_attno = 0; new_attno < newnatts; new_attno++)
 			{
 				att = TupleDescAttr(new_tupdesc, new_attno);
-				if (!att->attisdropped && att->attinhcount != 0 &&
+				if (!att->attisdropped &&
 					strcmp(attname, NameStr(att->attname)) == 0)
 					break;
 			}