diff --git a/docs/install.mdx b/docs/install.mdx
index 865baee5..6ce0542e 100644
--- a/docs/install.mdx
+++ b/docs/install.mdx
@@ -36,6 +36,8 @@ curl -fsSl https://static.kubevela.net/script/install-velad.sh | bash
 
 > Only the official release version is supported.
 
+Run following command in powershell:
+
 ```shell
 powershell -Command "iwr -useb https://static.kubevela.net/script/install-velad.ps1 | iex"
 ```
diff --git a/versioned_docs/version-v1.4/install.mdx b/versioned_docs/version-v1.4/install.mdx
index 4f8bc65f..0afd8989 100644
--- a/versioned_docs/version-v1.4/install.mdx
+++ b/versioned_docs/version-v1.4/install.mdx
@@ -36,6 +36,8 @@ curl -fsSl https://static.kubevela.net/script/install-velad.sh | bash -s v1.4.8
 
 > Only the official release version is supported.
 
+Run following command in powershell:
+
 ```shell
 powershell -Command "iwr -useb https://static.kubevela.net/script/install-velad.ps1 | iex"
 ```
diff --git a/versioned_docs/version-v1.5/install.mdx b/versioned_docs/version-v1.5/install.mdx
index 865baee5..6ce0542e 100644
--- a/versioned_docs/version-v1.5/install.mdx
+++ b/versioned_docs/version-v1.5/install.mdx
@@ -36,6 +36,8 @@ curl -fsSl https://static.kubevela.net/script/install-velad.sh | bash
 
 > Only the official release version is supported.
 
+Run following command in powershell:
+
 ```shell
 powershell -Command "iwr -useb https://static.kubevela.net/script/install-velad.ps1 | iex"
 ```