It means the last time Leinster suffered defeat in the RaboDirect PRO12 was in December, when Ulster prevailed 27-19 at Ravenhill.
Ulster's form has taken a turn for the worse since then and they have won just one of their last five matches and have slipped to third as a result.
And Toner wants to avenge his side's defeat earlier in the season.
"The gap between us was huge at one stage, but we have gained an advantage now and I am sure Ulster will be gunning for us on Saturday night," Toner told the Irish Independent.
"They will want to wrestle back top spot. It's up to us to stop them. I think we have the only 100 per cent home record in the competition and that is something we want to hold on to as well.
"It's always special for us playing at the RDS. This is a chance for us to make up for the mistakes we made in the game in Ravenhill too.
"We allowed them to bully us in the scrums in particular and it is something we have worked on a lot, this week in particular."
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