diff --git a/install.ps1 b/install.ps1
index be03810..486c7dc 100644
--- a/install.ps1
+++ b/install.ps1
@@ -139,6 +139,7 @@ function Copy-Auto() {
     Write-Host "${target} alreay exist."
     Write-Host "Now Backup.."
     Copy-Auto "${target}" "${target}.bak"
+    Remove-Item "${target}" -Recurse -Force
     Write-Host ""
   }
 
diff --git a/install.sh b/install.sh
index 99a2305..6958049 100755
--- a/install.sh
+++ b/install.sh
@@ -126,6 +126,7 @@ autocp() {
     echo "${target} alreay exist."
     echo "Now Backup.."
     autocp "${target}" "${target}.bak"
+    rm -rf "${target}"
     echo ""
   fi