diff --git a/tests/test_image.py b/tests/test_image.py
index 74e4a9a72575d243abe666b27aa43bea9f4b07e6..d7365f8d49b8ba4ab8d50f81b0b913b7f3e10cb1 100644
--- a/tests/test_image.py
+++ b/tests/test_image.py
@@ -291,6 +291,7 @@ 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,