diff --git a/scripts/install-iis-release.ps1 b/scripts/install-iis-release.ps1
index bef4b5a..eb23189 100644
--- a/scripts/install-iis-release.ps1
+++ b/scripts/install-iis-release.ps1
@@ -200,8 +200,10 @@ function Get-TargetState {
   }
   $bindings = @($site.Bindings.Collection)
   $expectedBinding = Get-BindingInformation
-  if ($bindings.Count -ne 1 -or $bindings[0].protocol -ne 'http' -or $bindings[0].bindingInformation -ne $expectedBinding) {
-    throw "Existing target binding does not exactly match http/$expectedBinding. Refusing adoption or binding changes."
+  # Extra bindings (for example www or localhost) are left untouched; the expected binding must be present.
+  $hasExpectedBinding = @($bindings | Where-Object { $_.protocol -eq 'http' -and $_.bindingInformation -eq $expectedBinding }).Count -gt 0
+  if (-not $hasExpectedBinding) {
+    throw "Existing target does not have the expected binding http/$expectedBinding. Refusing adoption or binding changes."
   }
   $physicalPath = Get-NormalizedPath $site.physicalPath
   $releasesRoot = Join-Path $DeployRoot 'releases'