The Black Ferns are determined to tidy up their discipline in a bid to avoid back-to-back defeats to Canada in Christchurch. 

The two teams meet again this afternoon at the same venue of Canada's only ever win over New Zealand in women's rugby. 

The Black Ferns gave away 15 penalties in last week's win over Australia. 

Liana Mikaele-Tu'u joined D'Arcy Waldegrave to preview the clash.  

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