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We show that for any $n$ and $q$, the number of real conjugacy classes in$\mathrm{PGL}(n, \mathbb{F}_q)$ is equal to the number of real conjugacyclasses of $\mathrm{GL}(n, \mathbb{F}_q)$ which are contained in$\mathrm{SL}(n, \mathbb{F}_q)$, refining a result of Lehrer, and extending theresult of Gill and Singh that this holds when $n$ is odd or $q$ is even.Further, we show that this quantity is equal to the number of real conjugacyclasses in $\mathrm{PGU}(n, \mathbb{F}_q)$, and equal to the number of realconjugacy classes of $\mathrm{U}(n, \mathbb{F}_q)$ which are contained in$\mathrm{SU}(n, \mathbb{F}_q)$, refining results of Gow and Macdonald. We alsogive a generating function for this common quantity.

On the number of real classes in the finite projective linear and unitary groups