diff --git a/libs/ardour/ardour/mix.h b/libs/ardour/ardour/mix.h
index 2deb28a5e1..a77ebe0267 100644
--- a/libs/ardour/ardour/mix.h
+++ b/libs/ardour/ardour/mix.h
@@ -55,7 +55,7 @@ LIBARDOUR_API void x86_sse_avx_find_peaks               (float const* buf, uint3
 LIBARDOUR_API void  x86_fma_mix_buffers_with_gain       (float* dst, float const* src, uint32_t nframes, float gain);
 #endif
 
-/* FMA functions */
+/* AVX512F functions */
 #ifdef FPU_AVX512F_SUPPORT
 LIBARDOUR_API float x86_avx512f_compute_peak            (float const* buf, uint32_t nsamples, float current);
 LIBARDOUR_API void  x86_avx512f_apply_gain_to_buffer    (float* buf, uint32_t nframes, float gain);