If HSA Contributions value is blank in 8889 but W2 reflects right value. Do I need to amend my 1040 to reflect right HSA contributions on my 8889 form?

I efiled my federal return using Turbotax but I later found that HSA contributions value on Form 8889 is blank though W2 reflects correct details.  Do I need to amend my return to reflect right HSA contribution from W2 onto 8889 form?  It is not going to change AGI or tax before and after amendment.