diff --git a/main.py b/main.py
index 28a9e0c..85293eb 100644
--- a/main.py
+++ b/main.py
@@ -1,2 +1,4 @@
+# CC0 2013 Vojtěch
+
 def soucet(a, c):
     return a + c
\ No newline at end of file