diff --git a/data/kinect.cal b/data/kinect.cal
index 47c331e..ee802fa 100644
--- a/data/kinect.cal
+++ b/data/kinect.cal
@@ -27,7 +27,7 @@ R13=0.005927
 R21=-0.000563
 R22=0.999999
 R23=0.001235
-R33=-0.005926
+R31=-0.005926
 R32=-0.001239
 R33=0.999982
 Tx=-0.024287