diff --git a/README.md b/README.md
index b3af294..3a7aea7 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ The installation is straightforward:
 ```bash
 # Activate your OpenFOAM environment, then clone the project and run the install script
 $ git clone --depth 1 https://github.com/zhyang-dev/wmake_with_bear.git
-$ cd wmake_with_bear && chmod +x install && ./install
+$ cd wmake_with_bear && ./install
 ```
 
 ### Usage
@@ -46,4 +46,4 @@ Tested environments:
 - OpenFOAM-v2012 on Ubuntu-20.04 with bear 2.4.3
 - OpenFOAM-v2012 on Ubuntu-16.04 with bear 2.1.5
 - OpenFOAM-11 on Ubuntu-20.04 with bear 2.4.3
-- OpenFOAM-6 on Ubuntu-18.04 with bear 2.3.11
\ No newline at end of file
+- OpenFOAM-6 on Ubuntu-18.04 with bear 2.3.11