diff --git a/datasalad/runners/iter_subproc.py b/datasalad/runners/iter_subproc.py
index bf8d731..d3418a1 100644
--- a/datasalad/runners/iter_subproc.py
+++ b/datasalad/runners/iter_subproc.py
@@ -88,13 +88,15 @@ def iter_subproc(
     ``CommandError`` is raised. The return code is read from
     the variable ``ls_stdout``
 
-    >>> try:
-    ...     with iter_subproc(['ls', '-@']) as ls_stdout:
-    ...         while True:
-    ...             next(ls_stdout)
-    ... except Exception as e:
-    ...     print(repr(e), ls_stdout.returncode)
-    StopIteration() 2
+    .. code-block:: python
+
+     >>> try:
+     ...     with iter_subproc(['ls', '-@']) as ls_stdout:
+     ...         while True:
+     ...             next(ls_stdout)
+     ... except Exception as e:
+     ...     print(repr(e), ls_stdout.returncode)
+     StopIteration() 2
 
 
     Parameters