diff --git a/gtk/gtk-query-settings.c b/gtk/gtk-query-settings.c
index 8fc39692cb..3640f85910 100644
--- a/gtk/gtk-query-settings.c
+++ b/gtk/gtk-query-settings.c
@@ -26,7 +26,7 @@ main (int argc, char **argv)
   GtkSettings  *settings;
   GParamSpec  **props;
   guint         n_properties;
-  int           i;
+  guint         i;
   int           max_prop_name_length = 0;
   gchar        *pattern = NULL;