diff --git a/make.ps1 b/make.ps1
index f76bc24..92b0d06 100644
--- a/make.ps1
+++ b/make.ps1
@@ -233,6 +233,7 @@ function ParseConfigFile($fileName)
 			ReadConfigLine $line $name
 		}
 	}
+	$reader.Close()
 
 	$missing = @()
 	foreach ($name in $names)