diff --git a/dirsha256sum b/dirsha256sum
index 5d90435..3d28b6a 100755
--- a/dirsha256sum
+++ b/dirsha256sum
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# This script calculates a sha256sum over all files in a dirextory including its subdirectories
+
 if [[ -z $1 ]]; then
 	echo "Usage: $0 <path to folder>"
 	exit -1