diff --git a/doc/contributing/source/coding-style.rst b/doc/contributing/source/coding-style.rst
index 208eef2c8..9a892d363 100644
--- a/doc/contributing/source/coding-style.rst
+++ b/doc/contributing/source/coding-style.rst
@@ -529,7 +529,7 @@ Miscellaneous items
       pkt->RemoveHeader (header);
       ...
 
-- As explained in this `issue <https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/732>`_,  
+- As explained in this `issue <https://gitlab.com/nsnam/ns-3-dev/-/merge_requests/732>`_,
   the ns-3 smart pointer class ``Ptr`` should be used in boolean comparisons as follows:
   ::
     for Ptr<> p, do not use:      use instead: