diff --git a/pystencils/gpu/indexing.py b/pystencils/gpu/indexing.py
index 32ff010099e1af22bf901f2e511111ae5a1ed8e0..27cb39e454913db4faab579dc366a879c1eb04b7 100644
--- a/pystencils/gpu/indexing.py
+++ b/pystencils/gpu/indexing.py
@@ -128,7 +128,8 @@ class BlockIndexing(AbstractIndexing):
 
     Args:
         iteration_space: list of slices to determine start, stop and the step size for each coordinate
-        data_layout: tuple specifying loop order with innermost loop last. This is the same format as returned by `Field.layout`.
+        data_layout: tuple specifying loop order with innermost loop last.
+                     This is the same format as returned by `Field.layout`.
         permute_block_size_dependent_on_layout: if True the block_size is permuted such that the fastest coordinate
                                                 gets the largest amount of threads
         compile_time_block_size: compile in concrete block size, otherwise the gpu variable 'blockDim' is used