diff --git a/demo/screenshot.png b/demo/screenshot.png
index 1228bd8..6102366 100644
Binary files a/demo/screenshot.png and b/demo/screenshot.png differ
diff --git a/scripts/generate_demo.sh b/scripts/generate_demo.sh
index 7cb3751..f8cb699 100755
--- a/scripts/generate_demo.sh
+++ b/scripts/generate_demo.sh
@@ -47,7 +47,9 @@ EOF
 cat <<EOF | $FVJ --add-jour "Today's code" --collection 2
 # Source code of current program
 
+\`\`\`sh
 $(cat "$0")
+\`\`\`
 EOF
 $FVJ --add-task "Look for typos in readme" --collection 2 <"README.md"
 ## End of data