diff --git a/Hello World/Dockerfile b/Hello World/Dockerfile
index b37e212..ce4cc8a 100644
--- a/Hello World/Dockerfile	
+++ b/Hello World/Dockerfile	
@@ -5,6 +5,6 @@ ENV LANG C.UTF-8
 
 # Copy data for add-on
 COPY run.sh /RUN 
-RUN chmod a+x /run.sh
+RUN chmod +x /run.sh
 
 CMD [ "/run.sh" ]
\ No newline at end of file