Income too high for tax deduction on Traditional IRA contribution. Spouse has retirement income only. Can spouse get traditional IRA tax deduction?

I have earned income too high for tax dedeuction  on a  traditional IRA contribution.  I have a retirement plan, spouse and I file joint return.  Spouse only receives retirement income.  Spouse does not receive any earned income, therefore, spouse as no retirement plan.  Turbo Tax program shows spouse can get full tax deduction on maximum traditional IRA contribution.  This doesn't seem correct. since spouse has no earned income and the combination of our income is too high.  Is this correct or incorrect?