diff --git a/README.md b/README.md
index c82282d..c4512d5 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Compute and plot Allan Deviation from tab separated values files.
 
 `python allanplot.py --help`
 
-usage: allanplot.py [-h] [-f FILENAME] [-c COLUMNS [COLUMNS ...]] [-r RATE]
+```usage: allanplot.py [-h] [-f FILENAME] [-c COLUMNS [COLUMNS ...]] [-r RATE]
 
 Plot Allan Deviation from timeseries file
 
@@ -18,7 +18,7 @@ optional arguments:
   -r RATE               Time rate in seconds (default 1)
 
 Example: './allanplot.py -f 'toto.dat' -c 2 3' compute and plot Allan
-Deviation form columns 2 and 3 of toto.dat
+Deviation form columns 2 and 3 of toto.dat```
 
 # Examples