diff --git a/servicetypes/plasma-packagestructure.desktop b/servicetypes/plasma-packagestructure.desktop
index e4b9bdd92..20957b42b 100644
--- a/servicetypes/plasma-packagestructure.desktop
+++ b/servicetypes/plasma-packagestructure.desktop
@@ -8,3 +8,6 @@ Comment[zh_TW]=Plasma 套件結構定義
 [PropertyDef::X-Plasma-PackageFileFilter]
 Type=QString
 
+[PropertyDef::X-Plasma-PackageFileMimetypes]
+Type=QStringList
+