As the Post-Conflict Peace has been shown to be severely fragile, several researchers have asked both what determines the risk for post-conflict peace collapse, and how it can be reduced. In their article "Post-Conflict Risks" Collier, Hoeffler and Söderbom (2008) argue that per capita income level and economic growth reduce post-conflict risks significantly and substantially. These findings have received considerable attention in both academic and in policy circles and they therefore deserve careful inspection. In this thesis I test the robustness of their results by changing from the Correlates of War to the UCDP\PRIOArmed Conflict Database. I also change to Maddison’s (2006) per capita income dataset, to avoid missingness and thereby reduce biasness. To account for repeated events I change to the Conditional Elapsed Time model. Doing this I find that poor countries are more likely to experience a peace collapse, indicating that risk reducing efforts should be inversely proportional to the level of income. However, my findings do not support that economic growth reduces post-conflict risks.