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-rw-r--r--src/indicator-sound.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/indicator-sound.h b/src/indicator-sound.h
index cf1535b..251295c 100644
--- a/src/indicator-sound.h
+++ b/src/indicator-sound.h
@@ -49,7 +49,7 @@ struct _IndicatorSound {
GType indicator_sound_get_type (void);
void prepare_state_machine();
-void determine_state_from_volume(gdouble volume_percent);
+extern void determine_state_from_volume(gdouble volume_percent);
gint get_state();
gchar* get_state_image_name(gint state);
void prepare_for_tests(IndicatorObject * io);