diff --git a/HowtoThumbor.md b/HowtoThumbor.md
index add56f53..5b2fa65c 100644
--- a/HowtoThumbor.md
+++ b/HowtoThumbor.md
@@ -65,4 +65,12 @@ eof
 # dpkg -i \
     python-libthumbor_1.3.2-1_all.deb \
     thumbor_6.3.2-4_amd64.deb
+~~~
+
+Thumbor utilise le port 8888 par défaut. Pour le modifier :
+
+~~~
+# cat /lib/systemd/system/thumbor.service
+# systemctl daemon-reload
+# systemctl start thumbor
 ~~~
\ No newline at end of file