diff --git a/run-app-local.ps1 b/run-app-local.ps1
index 96db4b108..9c09c8422 100644
--- a/run-app-local.ps1
+++ b/run-app-local.ps1
@@ -142,9 +142,11 @@ if ($branch -ne "main" -and -not $AllowNonMain) {
 }
 
 if (-not $NoBuild) {
-    $buildArgs = @("-Configuration", $Configuration)
+    $buildArgs = @{
+        Configuration = $Configuration
+    }
     if ($Dev) {
-        $buildArgs += "-DevBuild"
+        $buildArgs["DevBuild"] = $true
     }
 
     & "$repoRoot\build.ps1" @buildArgs
diff --git a/tests/OpenClaw.Tray.Tests/InstallerIssAssertionTests.cs b/tests/OpenClaw.Tray.Tests/InstallerIssAssertionTests.cs
index 643368d48..673be2ede 100644
--- a/tests/OpenClaw.Tray.Tests/InstallerIssAssertionTests.cs
+++ b/tests/OpenClaw.Tray.Tests/InstallerIssAssertionTests.cs
@@ -171,7 +171,9 @@ public void LocalInstallerBuild_UsesOneIdentitySwitchAndValidatesPayloadMarker()
         Assert.Contains("2>&1 | Out-Host", script);
         Assert.Contains("$wingetExitCode = $LASTEXITCODE", script);
         Assert.Contains("[switch]$Dev,", runScript);
-        Assert.Contains("$buildArgs += \"-DevBuild\"", runScript);
+        Assert.Contains("$buildArgs = @{", runScript);
+        Assert.Contains("Configuration = $Configuration", runScript);
+        Assert.Contains("$buildArgs[\"DevBuild\"] = $true", runScript);
         Assert.Contains("app-identity.txt", runScript);
         Assert.Contains("does not match requested", runScript);
         Assert.Contains("[switch]$DevBuild,", buildScript);