The goal of the paper is to analyse the changes in financing conditions of enterprises using convertible bonds, especially those enhanced by the early redemption call/put option. The study was conducted over two periods: before and after the global financial crisis outbreak. The paper has been hypothesized, confirming the use of the call/put option to raise capital on better terms compared to traditional hybrid debt. The study involved the major characteristics of convertible bonds issued by US non-financial corporations before and after the crisis of 2008. To evaluate the differences between the characteristics of bonds, statistical analysis based on significant differences test, t-test for independent samples, the Mann-Whitney test and two-factor analysis of variance were employed. The analysis shows that the worse the economic conditions, the shorter the debt maturity, conversion time and conversion premiums. An increased conversion ratio was also observed. These changes, however, are lower for bonds enhanced by the call/put option. This means that the financial crisis has worsened the conditions of hybrid financing. The call/put option eased this change by reducing the financial distress between the company and investors.