diff --git a/src/backend/commands/alter.c b/src/backend/commands/alter.c
index f7b2389b019..08957104c70 100644
--- a/src/backend/commands/alter.c
+++ b/src/backend/commands/alter.c
@@ -117,27 +117,21 @@ report_namespace_conflict(Oid classId, const char *name, Oid nspOid)
 	switch (classId)
 	{
 		case ConversionRelationId:
-			Assert(OidIsValid(nspOid));
 			msgfmt = gettext_noop("conversion \"%s\" already exists in schema \"%s\"");
 			break;
 		case StatisticExtRelationId:
-			Assert(OidIsValid(nspOid));
 			msgfmt = gettext_noop("statistics object \"%s\" already exists in schema \"%s\"");
 			break;
 		case TSParserRelationId:
-			Assert(OidIsValid(nspOid));
 			msgfmt = gettext_noop("text search parser \"%s\" already exists in schema \"%s\"");
 			break;
 		case TSDictionaryRelationId:
-			Assert(OidIsValid(nspOid));
 			msgfmt = gettext_noop("text search dictionary \"%s\" already exists in schema \"%s\"");
 			break;
 		case TSTemplateRelationId:
-			Assert(OidIsValid(nspOid));
 			msgfmt = gettext_noop("text search template \"%s\" already exists in schema \"%s\"");
 			break;
 		case TSConfigRelationId:
-			Assert(OidIsValid(nspOid));
 			msgfmt = gettext_noop("text search configuration \"%s\" already exists in schema \"%s\"");
 			break;
 		default: