diff --git a/README.md b/README.md
index e520295..603a36b 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Tool to cleanup backup directory with daily, weekly and monthly backups.
 
-```
+```text
 usage: clean-backups.py [-h] [-d N] [-w N] [-m N] [-f] PATH
 
 Cleanup old backups
@@ -16,4 +16,4 @@ optional arguments:
   -w N, --weekly N   keep N weekly backups, default: 4
   -m N, --monthly N  keep N monthly backups, default: 3
   -f, --force        suppress remove confirmation
-```
\ No newline at end of file
+```