diff --git src/bin/scripts/vacuumdb.c src/bin/scripts/vacuumdb.c
index 887fa48fbd..243d842d06 100644
--- src/bin/scripts/vacuumdb.c
+++ src/bin/scripts/vacuumdb.c
@@ -947,13 +947,6 @@ init_slot(ParallelSlot *slot, PGconn *conn, const char *progname)
 	slot->connection = conn;
 	slot->isFree = true;
 	slot->sock = PQsocket(conn);
-
-	if (slot->sock < 0)
-	{
-		fprintf(stderr, _("%s: invalid socket: %s"), progname,
-				PQerrorMessage(conn));
-		exit(1);
-	}
 }
 
 static void