No, you don't need to amend your return to correct this information. It's not even something that the IRS transcribes.
However, a "Yes" answer would tip off the IRS that you may need to file Form 3520, Annual Return To Report Transactions With Foreign Trusts and Receipt of Certain Foreign G.... It can be filed separately from your Form 1040-series return.
To see if you're required to file, please see Who Must File in the Instructions for Form 3520. Note that penalties can apply if Form 3520 isn't timely filed.
When filing, you might attach a letter describing your error when filing your tax return.
This answer has been verified for accuracy by an Intuit expert employee
