diff --git a/tests/test_image.py b/tests/test_image.py
index 84a3d244542163e7c164a26a0408c336447af250..c722719b2edb9278d13e05dd1a13505d6f016e2e 100644
--- a/tests/test_image.py
+++ b/tests/test_image.py
@@ -307,7 +307,6 @@ def _test_Image_atts(imgtype):
             assert tuple(i.nibImage.header.get_zooms()) == tuple(pixdims)
 
             assert i.ndim       == expndims
-            assert i.ndims      == expndims
             assert i.dtype      == dtype
             assert i.name       == op.basename(path)
             assert i.dataSource == fslpath.addExt(path,