diff --git a/OpenRA.Game/FileSystem/ZipFile.cs b/OpenRA.Game/FileSystem/ZipFile.cs
index 63d35c2788..4d619dc538 100644
--- a/OpenRA.Game/FileSystem/ZipFile.cs
+++ b/OpenRA.Game/FileSystem/ZipFile.cs
@@ -137,6 +137,9 @@ namespace OpenRA.FileSystem
 		{
 			if (pkg != null)
 				pkg.Close();
+
+			if (pkgStream != null)
+				pkgStream.Dispose();
 		}
 	}