diff --git a/buildkite/startup-windows.ps1 b/buildkite/startup-windows.ps1
index e21a567..3f4d61c 100755
--- a/buildkite/startup-windows.ps1
+++ b/buildkite/startup-windows.ps1
@@ -52,7 +52,7 @@
 $buildkite_agent_root = "c:\buildkite"
 $buildkite_agent_config = @"
 token="${buildkite_agent_token}"
-name="%hostname"
+name="%hostname-%n"
 tags="os=windows"
 build-path="d:\build"
 hooks-path="c:\buildkite\hooks"