diff --git a/1991/fine/demo.sh b/1991/fine/demo.sh
index 03f0996fd..96bb82a73 100755
--- a/1991/fine/demo.sh
+++ b/1991/fine/demo.sh
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+#
+# demo.sh - script to demonstrate IOCCC entry 1991/fine
+#
 
 make all || exit 1