1 files changed, 2 insertions, 0 deletions
diff --git a/src/util.h b/src/util.h
index 8d044ce..22a9a14 100644
--- a/src/util.h
+++ b/src/util.h
@@ -104,6 +104,8 @@ namespace procman
                                gpointer user_data);
     gint priority_compare_func(GtkTreeModel* model, GtkTreeIter* first,
                             GtkTreeIter* second, gpointer user_data);
+    gint number_compare_func(GtkTreeModel* model, GtkTreeIter* first,
+                            GtkTreeIter* second, gpointer user_data);
 
 
     template<typename T>