diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -189,7 +189,7 @@
 
 logging.basicConfig(level=logging.DEBUG)
 gnu_lister()
-
+```
 ## lister-cran
 
 Once configured, you can execute a RCRAN lister using the following instructions in a `python3` script:
@@ -215,4 +215,4 @@
 PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 
 See top-level LICENSE file for the full text of the GNU General Public License
-along with this program.
\ No newline at end of file
+along with this program.