diff --git a/gtk/Torrent.cc b/gtk/Torrent.cc
index 0994a8d42..b606da19e 100644
--- a/gtk/Torrent.cc
+++ b/gtk/Torrent.cc
@@ -116,7 +116,7 @@ Torrent::Columns::Columns()
 class Torrent::Impl
 {
 public:
-    enum class Property : guint
+    enum class Property : guint8
     {
         ICON = 1,
         NAME,