diff --git a/website/content/en/docs/installation/_index.md b/website/content/en/docs/installation/_index.md
index 84d282cfe0f..6b162acd3b0 100644
--- a/website/content/en/docs/installation/_index.md
+++ b/website/content/en/docs/installation/_index.md
@@ -29,7 +29,7 @@ brew install operator-sdk
 Set platform information:
 
 ```sh
-export ARCH=$(case $(arch) in x86_64) echo -n amd64 ;; aarch64) echo -n arm64 ;; *) echo -n $(arch) ;; esac)
+export ARCH=$(case $(uname -m) in x86_64) echo -n amd64 ;; aarch64) echo -n arm64 ;; *) echo -n $(uname -m) ;; esac)
 export OS=$(uname | awk '{print tolower($0)}')
 ```