diff --git a/panel-plugin/network.cc b/panel-plugin/network.cc
index 6a85daba058a222823e72f055141336d13901c8b..3de831d75f076fb3738dd87a5cf9870fd42e6394 100644
--- a/panel-plugin/network.cc
+++ b/panel-plugin/network.cc
@@ -114,7 +114,7 @@ read_netload_proc (gulong *bytes)
 gint
 read_netload (gulong *net, gulong *NTotal)
 {
-    static guint64 bytes[2];
+    static gulong bytes[2];
     static gint64 time[2];
 
     *net = 0;