diff --git a/module/zfs/vdev_raidz.c b/module/zfs/vdev_raidz.c
index a9b12471c..5941e645e 100644
--- a/module/zfs/vdev_raidz.c
+++ b/module/zfs/vdev_raidz.c
@@ -2260,7 +2260,7 @@ vdev_raidz_asize_to_psize(vdev_t *vd, uint64_t asize, uint64_t txg)
 	psize -= nparity * DIV_ROUND_UP(psize, cols);
 	psize <<= ashift;
 
-	return (asize);
+	return (psize);
 }
 
 /*