diff --git a/Scripts/start-calibre-server.ps1 b/Scripts/start-calibre-server.ps1
index 02240717..70983339 100755
--- a/Scripts/start-calibre-server.ps1
+++ b/Scripts/start-calibre-server.ps1
@@ -11,7 +11,7 @@
 	https://github.com/fleschutz/PowerShell
 #>
 
-param([int]port = 8099)
+param([int]$port = 8099)
 
 try {
 	$StopWatch = [system.diagnostics.stopwatch]::startNew()