Information security risk management is a fundamental process conducted for the purpose of securing information assets in an organization. It usually involves asset identification and valuation, threat analysis, risk analysis and implementation of countermeasures. A correct asset valuation is a basis for accurate risk analysis, but there is a lack of works describing the valuation process with respect to dependencies among assets. In this work we propose a method for inspecting asset dependencies, based on common security attributes - confidentiality, integrity and availability. Our method should bring more detailed outputs from the risk analysis and therefore make this process more objective.