diff --git a/src/backend/commands/trigger.c b/src/backend/commands/trigger.c
index 336d3b42d720c214405eaabd7329306de6a647e6..b16e2c48900ce92a1bf9cadb3feab47fbd4c161b 100644
--- a/src/backend/commands/trigger.c
+++ b/src/backend/commands/trigger.c
@@ -241,7 +241,10 @@ CreateTrigger(CreateTrigStmt *stmt, Oid constraintOid)
 	 */
 	tgrel = heap_open(TriggerRelationId, RowExclusiveLock);
 
-	trigoid = GetNewOid(tgrel);
+	if (OidIsValid(stmt->trigOid))
+		trigoid = stmt->trigOid;
+	else
+		trigoid = GetNewOid(tgrel);
 
 	/*
 	 * If trigger is for an RI constraint, the passed-in name is the