diff --git a/tests/examples/scaletempo/demo-gui.c b/tests/examples/scaletempo/demo-gui.c
index 01df9991a6..5ff9760647 100644
--- a/tests/examples/scaletempo/demo-gui.c
+++ b/tests/examples/scaletempo/demo-gui.c
@@ -111,7 +111,7 @@ demo_gui_seek_bar_format (GtkScale * scale, gdouble value, gpointer data)
       PRINTF_TIME_ARGS ((gint64) value));
 }
 
-gboolean
+static gboolean
 update_position (gpointer data)
 {
   DemoGui *gui = DEMO_GUI (data);
@@ -144,7 +144,7 @@ update_position (gpointer data)
 }
 
 
-gboolean
+static gboolean
 demo_gui_seek_bar_change (GtkRange * range,
     GtkScrollType scroll, gdouble value, gpointer data)
 {