diff --git a/module/zfs/vdev_raidz_math.c b/module/zfs/vdev_raidz_math.c
index e6112bc02..3ef67768f 100644
--- a/module/zfs/vdev_raidz_math.c
+++ b/module/zfs/vdev_raidz_math.c
@@ -472,7 +472,7 @@ vdev_raidz_math_init(void)
 	return;
 #endif
 
-	/* Fake an zio and run the benchmark on a warmed up buffer */
+	/* Fake a zio and run the benchmark on a warmed up buffer */
 	bench_zio = kmem_zalloc(sizeof (zio_t), KM_SLEEP);
 	bench_zio->io_offset = 0;
 	bench_zio->io_size = BENCH_ZIO_SIZE; /* only data columns */