diff --git a/src/deepmr/io/types/header.py b/src/deepmr/io/types/header.py
index 19fcad82..2f20f15b 100644
--- a/src/deepmr/io/types/header.py
+++ b/src/deepmr/io/types/header.py
@@ -82,7 +82,7 @@ class Header:
         List of spatial axis to be flipped after image reconstruction.
         The default is an empty list (no flipping).
     transpose : list
-         Permutation of image dimensions after reconstruction, depending on acquisition mode:
+        Permutation of image dimensions after reconstruction, depending on acquisition mode:
              
             * **2Dcart:** reconstructed image has (nslices, ncontrasts, ny, nx) -> transpose = [1, 0, 2, 3] 
             * **2Dnoncart:** reconstructed image has (nslices, ncontrasts, ny, nx) -> transpose = [1, 0, 2, 3]