Having an information technology (IT) plan is a minimum beseline for optimal IT governance. But, creating a plan is only one problem, executing it proses even more challenging problems. In this research, we investigate the correlation between an organization's IT plan and the organization's IT governance maturity level. We show that, on one hand, executing an IT plan requires a certain IT governance maturity level. We compare the situations on two government institutions and found indications that the organization with an ambitions IT plan has more mature IT governance than the other whose IT plan is relatively modest. The results suggest that an effective IT plan should include plans for the development of IT governance mehanisms relevan to the goals that the plan is intended to achieve, and the plan's implementation schedule, also known as the IT roadmap, should take into consideration the growth of the IT governance mechanisms maturity levels