diff --git a/Examples/Python/SimpleTransformix.py b/Examples/Python/SimpleTransformix.py
index 7940ffa57..1ec599b43 100644
--- a/Examples/Python/SimpleTransformix.py
+++ b/Examples/Python/SimpleTransformix.py
@@ -13,7 +13,7 @@
 transformixImageFilter = sitk.TransformixImageFilter()
 
 # Read Input
-transformixImageFilter.SetInputImage(sitk.ReadImage(str(sys.argv[4])))
+transformixImageFilter.SetMovingImage(sitk.ReadImage(str(sys.argv[4])))
 transformixImageFilter.SetParameterMap(elastixImageFilter.GetTransformParameterMap())
 
 # Perform warp