diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 8b14b96..c12bf6c 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -2332,6 +2332,9 @@ reindex_index(Oid indexId)
 	 * If the index is marked invalid or not ready (ie, it's from a failed
 	 * CREATE INDEX CONCURRENTLY), we can now mark it valid.  This allows
 	 * REINDEX to be used to clean up in such cases.
+	 *
+	 * Also if the index was originally built using CREATE INDEX CONCURRENTLY
+	 * we want to clear the indcheckxmin field since it's no longer relevant.
 	 */
 	pg_index = heap_open(IndexRelationId, RowExclusiveLock);
 
@@ -2342,10 +2345,11 @@ reindex_index(Oid indexId)
 		elog(ERROR, "cache lookup failed for index %u", indexId);
 	indexForm = (Form_pg_index) GETSTRUCT(indexTuple);
 
-	if (!indexForm->indisvalid || !indexForm->indisready)
+	if (!indexForm->indisvalid || !indexForm->indisready || indexForm->indcheckxmin)
 	{
 		indexForm->indisvalid = true;
 		indexForm->indisready = true;
+		indexForm->indcheckxmin = false;
 		simple_heap_update(pg_index, &indexTuple->t_self, indexTuple);
 		CatalogUpdateIndexes(pg_index, indexTuple);
 	}