diff --git a/README.md b/README.md
index 7444244..832294b 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 sudo apt-get -y update
 sudo apt-get install -y sudo wget
 wget https://raw.githubusercontent.com/friendlyarm/build-env-on-ubuntu-bionic/master/install.sh
+chmod 755 install.sh
 sudo ./install.sh
 ```
 ### Supported Distributions