In a frictionless market where  rms can always raise capital, debtors default only if their total assets cannot cover their total liabilities. However, in the presence of market imperfection, debtors may default even while solvent if the cost of new capital outweighs the legal penalty on contract violation. Using a unique sample of Chinese bank loans over the period 2007-2012, we analyze the repayment decisions of borrowing rms whose cash holdings are high enough to cover the bank debt coming due. We  nd that poor legal enforcement signi cantly increases the likelihood of default. This positive association becomes stronger if  rms face tighter  nancing constraints, or when credit supply becomes more scarce. Our results illustrate the role of legal enforcement in determining  nancial risks and show that market imperfection strengthening the impact of legal enforcement on  nancial risks.