diff --git a/src/bin/pg_dump/pg_dump.h b/src/bin/pg_dump/pg_dump.h
index c899f1bc49f..b126f8bda02 100644
--- a/src/bin/pg_dump/pg_dump.h
+++ b/src/bin/pg_dump/pg_dump.h
@@ -371,7 +371,7 @@ typedef struct _indxInfo
 								 * contains both key and nonkey attributes */
 	bool		indisclustered;
 	bool		indisreplident;
-	Oid			parentidx;		/* if partitioned, parent index OID */
+	Oid			parentidx;		/* if a partition, parent index OID */
 	SimplePtrList partattaches;	/* if partitioned, partition attach objects */
 
 	/* if there is an associated constraint object, its dumpId: */