I retired last year and had to close my SAR. This was reported on my 42 and a 1099-B. How do I report the 1099-B to prevent this income from being reported twice?

When I retired last year, I had to close my SAR.  This was reported on my W2 (Line 12A as V, Income from exercise of nonstatutory stock options.  State and Federal taxes were with held on this amount.  When I enter the data from the 1099-B I received from the broker firm, the amount of the proceeds is added to my total taxable income.  I seem to be taxed twice on the SAR, once for the total (on the W2 and once on the 1099-B.  Am I doing something incorrectly?  How can I prevent this from happening?