diff --git a/documents/Programmierparadigmen/scripts/prolog/hello-world.pl b/documents/Programmierparadigmen/scripts/prolog/hello-world.pl
old mode 100644
new mode 100755
index 9608394..bcf9625
--- a/documents/Programmierparadigmen/scripts/prolog/hello-world.pl
+++ b/documents/Programmierparadigmen/scripts/prolog/hello-world.pl
@@ -1,2 +1,3 @@
-:- initialization(main).
-main :- write('Hello World!'), nl, halt.
\ No newline at end of file
+#!/usr/bin/swipl -q -t main -f
+
+main :- writeln('Hello world!').
\ No newline at end of file