Nicky Morgan, education boss, and David Gauke, the government's Financial Secretary to the Treasury, appeared in Tuesday afternoon's issue of the London daily, accidentally labelled in a picture caption as husband and wife.
Morgan's husband in real life is architect Jonathan Morgan.
Gauke was left bemused by the whole ordeal, tweeting: "A little surprised to learn from the Evening Standard that I am married to Nicky Morgan and called Jonathan."
Morgan has not yet responded to the editing error, although The Spectator assistant editor, Isabel Harman, commented that the Education Secretary looked "thrilled".
Others even chimed in with messages of celebration to the happy - and surprised - couple.
While it's likely this was simply a sub-editing slip, Morgan and Gauke could be taking advantage of a new Government proposal, revealed in Budget 2015, that would mean married couples would be able to pass on assets worth up to £1m without paying any inheritance tax.