diff --git a/figures/code/chapter6/fig6_26.py b/figures/code/chapter6/fig6_26.py
index ac07dff..895c924 100755
--- a/figures/code/chapter6/fig6_26.py
+++ b/figures/code/chapter6/fig6_26.py
@@ -7,7 +7,7 @@
 from spatialmath import SE2, SE3
 from spatialmath.base import ICP2d
 
-pg = PoseGraph('data/killian.g2o.zip', laser=True)
+pg = PoseGraph('data/killian.g2o.zip', lidar=True)
 print(pg)
 print(pg.graph)
 
diff --git a/figures/code/chapter6/fig6_27.py b/figures/code/chapter6/fig6_27.py
index c1fc72f..077167b 100755
--- a/figures/code/chapter6/fig6_27.py
+++ b/figures/code/chapter6/fig6_27.py
@@ -7,7 +7,7 @@
 from roboticstoolbox.mobile import *
 from spatialmath import SE2, SE3, base
 
-pg = PoseGraph('data/killian.g2o.zip', laser=True)
+pg = PoseGraph('data/killian.g2o.zip', lidar=True)
 print(pg)
 print(pg.graph)