Heidar Helguson opened the scoring for Rangers in the first half but Barry Nicholson secured a share of the spoils for North End as he equalised from 18 yards after 64 minutes.
Warnock said: "I have got no complaints, that's a very good point in the end.
"I was a bit disappointed that maybe we should have scored more than one in the first half and possibly killed them off, but let's give Preston credit, they took their chance well and we had to produce some great defending towards the end."
Source: PA
Source: PA