This study examined the degree to which legislation intended to reduce the incidence of cigarette-caused fires influenced the behaviours of a cohort of smokers in Ontario. A random digit dialled telephone survey of adult smokers residing in Ontario was conducted in 2005, ending 1 month prior to the reduced ignition propensity (RIP) regulation's implementation date. A follow-up survey was conducted one year later. Of the baseline participants, 73.0% (n=435) completed the follow-up survey. The frequency of fire risk behaviours was similar across both surveys. At baseline, only 3.7% of smokers interviewed reported that their cigarettes went out on their own 'often' while smoking. Following the implementation of the reduced ignition propensity legislation, this increased significantly to 14.7%. Results suggest that the proportion of Ontario smokers who reported engaging in behaviour such as leaving a cigarette burning unattended and smoking in bed actually declined, although these declines were not statistically significant across all measures of fire risk.